diff --git a/code/AMFImporter.cpp b/code/AMFImporter.cpp
index 78f21814c..a038560fc 100644
--- a/code/AMFImporter.cpp
+++ b/code/AMFImporter.cpp
@@ -51,7 +51,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "AMFImporter_Macro.hpp"
 
 #include "fast_atof.h"
-#include "DefaultIOSystem.h"
+#include <assimp/DefaultIOSystem.h>
 
 // Header files, stdlib.
 #include <memory>
diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index 6d3cfb0fe..60d0ef23e 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -93,6 +93,8 @@ SET( PUBLIC_HEADERS
   ${HEADER_PATH}/NullLogger.hpp
   ${HEADER_PATH}/cexport.h
   ${HEADER_PATH}/Exporter.hpp
+  ${HEADER_PATH}/DefaultIOStream.h
+  ${HEADER_PATH}/DefaultIOSystem.h
 )
 
 SET( Core_SRCS
@@ -125,9 +127,7 @@ SET( Common_SRCS
   ByteSwapper.h
   DefaultProgressHandler.h
   DefaultIOStream.cpp
-  DefaultIOStream.h
   DefaultIOSystem.cpp
-  DefaultIOSystem.h
   CInterfaceIOWrapper.cpp
   CInterfaceIOWrapper.h
   Hash.h
diff --git a/code/ColladaExporter.cpp b/code/ColladaExporter.cpp
index 7f9540aa1..fad035358 100644
--- a/code/ColladaExporter.cpp
+++ b/code/ColladaExporter.cpp
@@ -47,9 +47,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "Bitmap.h"
 #include "fast_atof.h"
 #include "SceneCombiner.h"
-#include "DefaultIOSystem.h"
 #include "StringUtils.h"
 #include "XMLTools.h"
+#include <assimp/DefaultIOSystem.h>
 #include <assimp/IOSystem.hpp>
 #include <assimp/Exporter.hpp>
 #include <assimp/scene.h>
diff --git a/code/ColladaLoader.cpp b/code/ColladaLoader.cpp
index 7c6aa74bb..c671545ca 100644
--- a/code/ColladaLoader.cpp
+++ b/code/ColladaLoader.cpp
@@ -54,7 +54,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "fast_atof.h"
 #include "ParsingUtils.h"
 #include "SkeletonMeshBuilder.h"
-#include "Defines.h"
 #include "CreateAnimMesh.h"
 
 #include "time.h"
@@ -62,7 +61,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <algorithm>
 #include <cstdint>
 #include <numeric>
-#include "Defines.h"
+#include <assimp/Defines.h>
 
 
 using namespace Assimp;
diff --git a/code/DefaultIOStream.cpp b/code/DefaultIOStream.cpp
index ddb17881f..db1b6baf8 100644
--- a/code/DefaultIOStream.cpp
+++ b/code/DefaultIOStream.cpp
@@ -44,7 +44,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 #include <assimp/ai_assert.h>
-#include "DefaultIOStream.h"
+#include <assimp/DefaultIOStream.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 
diff --git a/code/DefaultIOSystem.cpp b/code/DefaultIOSystem.cpp
index 8c44c8bd0..711476806 100644
--- a/code/DefaultIOSystem.cpp
+++ b/code/DefaultIOSystem.cpp
@@ -40,10 +40,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 /** @file Default implementation of IOSystem using the standard C file functions */
 
-#include "DefaultIOSystem.h"
-#include "DefaultIOStream.h"
 #include "StringComparison.h"
 
+#include <assimp/DefaultIOSystem.h>
+#include <assimp/DefaultIOStream.h>
 #include <assimp/DefaultLogger.hpp>
 #include <assimp/ai_assert.h>
 #include <stdlib.h>
diff --git a/code/DefaultLogger.cpp b/code/DefaultLogger.cpp
index 5364bd8bc..106c51561 100644
--- a/code/DefaultLogger.cpp
+++ b/code/DefaultLogger.cpp
@@ -43,13 +43,14 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *  @brief Implementation of DefaultLogger (and Logger)
  */
 
-#include "DefaultIOSystem.h"
 
 // Default log streams
 #include "Win32DebugLogStream.h"
 #include "StdOStreamLogStream.h"
 #include "FileLogStream.h"
 #include "StringUtils.h"
+
+#include <assimp/DefaultIOSystem.h>
 #include <assimp/NullLogger.hpp>
 #include <assimp/DefaultLogger.hpp>
 #include <assimp/ai_assert.h>
diff --git a/code/Exceptional.h b/code/Exceptional.h
index 3268423ef..5109b8f07 100644
--- a/code/Exceptional.h
+++ b/code/Exceptional.h
@@ -42,7 +42,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define INCLUDED_EXCEPTIONAL_H
 
 #include <stdexcept>
-#include "DefaultIOStream.h"
+#include <assimp/DefaultIOStream.h>
 using std::runtime_error;
 
 #ifdef _MSC_VER
diff --git a/code/Exporter.cpp b/code/Exporter.cpp
index 3f77826e5..81178bbdb 100644
--- a/code/Exporter.cpp
+++ b/code/Exporter.cpp
@@ -52,7 +52,6 @@ Here we implement only the C++ interface (Assimp::Exporter).
 
 #ifndef ASSIMP_BUILD_NO_EXPORT
 
-#include "DefaultIOSystem.h"
 #include "BlobIOSystem.h"
 #include "SceneCombiner.h"
 #include "BaseProcess.h"
@@ -64,6 +63,8 @@ Here we implement only the C++ interface (Assimp::Exporter).
 #include "Exceptional.h"
 #include "ScenePrivate.h"
 #include <memory>
+
+#include <assimp/DefaultIOSystem.h>
 #include <assimp/Exporter.hpp>
 #include <assimp/mesh.h>
 #include <assimp/postprocess.h>
@@ -235,7 +236,7 @@ bool Exporter::IsDefaultIOHandler() const {
 }
 
 // ------------------------------------------------------------------------------------------------
-const aiExportDataBlob* Exporter::ExportToBlob( const aiScene* pScene, const char* pFormatId, 
+const aiExportDataBlob* Exporter::ExportToBlob( const aiScene* pScene, const char* pFormatId,
                                                 unsigned int, const ExportProperties* pProperties ) {
     if (pimpl->blob) {
         delete pimpl->blob;
diff --git a/code/FileLogStream.h b/code/FileLogStream.h
index 574a63ed6..ba08d2c89 100644
--- a/code/FileLogStream.h
+++ b/code/FileLogStream.h
@@ -3,7 +3,7 @@
 
 #include <assimp/LogStream.hpp>
 #include <assimp/IOStream.hpp>
-#include "DefaultIOSystem.h"
+#include <assimp/DefaultIOSystem.h>
 
 namespace Assimp    {
 
diff --git a/code/IFCBoolean.cpp b/code/IFCBoolean.cpp
index d3b77d87c..98b230392 100644
--- a/code/IFCBoolean.cpp
+++ b/code/IFCBoolean.cpp
@@ -47,7 +47,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "IFCUtil.h"
 #include "PolyTools.h"
 #include "ProcessHelper.h"
-#include "Defines.h"
+#include <assimp/Defines.h>
 
 #include <iterator>
 #include <tuple>
diff --git a/code/IFCUtil.cpp b/code/IFCUtil.cpp
index 7caebbcd4..d7e4d5d54 100644
--- a/code/IFCUtil.cpp
+++ b/code/IFCUtil.cpp
@@ -49,7 +49,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "IFCUtil.h"
 #include "PolyTools.h"
 #include "ProcessHelper.h"
-#include "Defines.h"
+#include <assimp/Defines.h>
 
 namespace Assimp {
     namespace IFC {
diff --git a/code/Importer.cpp b/code/Importer.cpp
index d60dfb6b0..7d7b84292 100644
--- a/code/Importer.cpp
+++ b/code/Importer.cpp
@@ -65,8 +65,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "BaseImporter.h"
 #include "BaseProcess.h"
 
-#include "DefaultIOStream.h"
-#include "DefaultIOSystem.h"
 #include "DefaultProgressHandler.h"
 #include "GenericProperty.h"
 #include "ProcessHelper.h"
@@ -81,6 +79,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <memory>
 #include <cctype>
 
+#include <assimp/DefaultIOStream.h>
+#include <assimp/DefaultIOSystem.h>
+
 #ifndef ASSIMP_BUILD_NO_VALIDATEDS_PROCESS
 #   include "ValidateDataStructure.h"
 #endif
diff --git a/code/MDLMaterialLoader.cpp b/code/MDLMaterialLoader.cpp
index 3425d7b09..64cebc7d5 100644
--- a/code/MDLMaterialLoader.cpp
+++ b/code/MDLMaterialLoader.cpp
@@ -52,8 +52,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/IOSystem.hpp>
 #include <assimp/DefaultLogger.hpp>
 #include <assimp/scene.h>
+#include <assimp/Defines.h>
 #include "qnan.h"
-#include "Defines.h"
 
 
 using namespace Assimp;
diff --git a/code/ObjFileImporter.cpp b/code/ObjFileImporter.cpp
index 9a5a56c5e..85d0d08af 100644
--- a/code/ObjFileImporter.cpp
+++ b/code/ObjFileImporter.cpp
@@ -41,12 +41,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef ASSIMP_BUILD_NO_OBJ_IMPORTER
 
-#include "DefaultIOSystem.h"
 #include "ObjFileImporter.h"
 #include "ObjFileParser.h"
 #include "ObjFileData.h"
 #include "IOStreamBuffer.h"
 #include <memory>
+#include <assimp/DefaultIOSystem.h>
 #include <assimp/Importer.hpp>
 #include <assimp/scene.h>
 #include <assimp/ai_assert.h>
diff --git a/code/ObjFileParser.cpp b/code/ObjFileParser.cpp
index 6980f0dab..41ae447ba 100644
--- a/code/ObjFileParser.cpp
+++ b/code/ObjFileParser.cpp
@@ -45,8 +45,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "ObjTools.h"
 #include "ObjFileData.h"
 #include "ParsingUtils.h"
-#include "DefaultIOSystem.h"
 #include "BaseImporter.h"
+#include <assimp/DefaultIOSystem.h>
 #include <assimp/DefaultLogger.hpp>
 #include <assimp/material.h>
 #include <assimp/Importer.hpp>
@@ -58,7 +58,7 @@ const std::string ObjFileParser::DEFAULT_MATERIAL = AI_DEFAULT_MATERIAL_NAME;
 
 // -------------------------------------------------------------------
 //  Constructor with loaded data and directories.
-ObjFileParser::ObjFileParser( IOStreamBuffer<char> &streamBuffer, const std::string &modelName, 
+ObjFileParser::ObjFileParser( IOStreamBuffer<char> &streamBuffer, const std::string &modelName,
                               IOSystem *io, ProgressHandler* progress,
                               const std::string &originalObjFileName) :
     m_DataIt(),
@@ -115,7 +115,7 @@ void ObjFileParser::parseFile( IOStreamBuffer<char> &streamBuffer ) {
         m_DataIt = buffer.begin();
         m_DataItEnd = buffer.end();
 
-        // Handle progress reporting        
+        // Handle progress reporting
         const size_t filePos( streamBuffer.getFilePos() );
         if ( lastFilePos < filePos ) {
             processed += static_cast<unsigned int>(filePos);
diff --git a/code/OpenGEXImporter.cpp b/code/OpenGEXImporter.cpp
index a605e0f41..442d19458 100644
--- a/code/OpenGEXImporter.cpp
+++ b/code/OpenGEXImporter.cpp
@@ -40,7 +40,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef ASSIMP_BUILD_NO_OPENGEX_IMPORTER
 
 #include "OpenGEXImporter.h"
-#include "DefaultIOSystem.h"
+#include <assimp/DefaultIOSystem.h>
 #include <assimp/DefaultLogger.hpp>
 #include "MakeVerboseFormat.h"
 #include "StringComparison.h"
diff --git a/code/Q3BSPFileImporter.cpp b/code/Q3BSPFileImporter.cpp
index 198ecdd73..25ecb0017 100644
--- a/code/Q3BSPFileImporter.cpp
+++ b/code/Q3BSPFileImporter.cpp
@@ -40,7 +40,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef ASSIMP_BUILD_NO_Q3BSP_IMPORTER
 
-#include "DefaultIOSystem.h"
 #include "Q3BSPFileImporter.h"
 #include "Q3BSPZipArchive.h"
 #include "Q3BSPFileParser.h"
@@ -56,6 +55,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/mesh.h>
 #include <assimp/scene.h>
 #include <assimp/ai_assert.h>
+#include <assimp/DefaultIOSystem.h>
 #include <vector>
 #include <sstream>
 #include "StringComparison.h"
diff --git a/code/Q3BSPFileParser.cpp b/code/Q3BSPFileParser.cpp
index 0dabaf87d..b32f15000 100644
--- a/code/Q3BSPFileParser.cpp
+++ b/code/Q3BSPFileParser.cpp
@@ -42,10 +42,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef ASSIMP_BUILD_NO_Q3BSP_IMPORTER
 
 #include "Q3BSPFileParser.h"
-#include "DefaultIOSystem.h"
 #include "Q3BSPFileData.h"
 #include "Q3BSPZipArchive.h"
 #include <vector>
+#include <assimp/DefaultIOSystem.h>
 #include <assimp/ai_assert.h>
 
 namespace Assimp {
diff --git a/code/SceneCombiner.h b/code/SceneCombiner.h
index a6ba06768..64c1ea48e 100644
--- a/code/SceneCombiner.h
+++ b/code/SceneCombiner.h
@@ -46,7 +46,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <assimp/ai_assert.h>
 #include <assimp/types.h>
-#include "Defines.h"
+#include <assimp/Defines.h>
 #include <stddef.h>
 #include <set>
 #include <list>
diff --git a/code/StandardShapes.cpp b/code/StandardShapes.cpp
index eed8ddabc..26c84217a 100644
--- a/code/StandardShapes.cpp
+++ b/code/StandardShapes.cpp
@@ -47,8 +47,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "StandardShapes.h"
 #include "StringComparison.h"
-#include "Defines.h"
 #include <stddef.h>
+#include <assimp/Defines.h>
 #include <assimp/mesh.h>
 
 namespace Assimp    {
diff --git a/code/StepExporter.cpp b/code/StepExporter.cpp
index eb84ac594..aa7086cee 100644
--- a/code/StepExporter.cpp
+++ b/code/StepExporter.cpp
@@ -48,7 +48,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "BaseImporter.h"
 #include "fast_atof.h"
 #include "SceneCombiner.h"
-#include "DefaultIOSystem.h"
 #include <iostream>
 #include <ctime>
 #include <set>
@@ -56,6 +55,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <list>
 #include <memory>
 #include "Exceptional.h"
+#include <assimp/DefaultIOSystem.h>
 #include <assimp/IOSystem.hpp>
 #include <assimp/scene.h>
 #include <assimp/light.h>
diff --git a/code/StreamReader.h b/code/StreamReader.h
index 4ef42c1b3..698ba2b39 100644
--- a/code/StreamReader.h
+++ b/code/StreamReader.h
@@ -50,7 +50,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "Exceptional.h"
 #include <memory>
 #include <assimp/IOStream.hpp>
-#include "Defines.h"
+#include <assimp/Defines.h>
 
 namespace Assimp {
 
@@ -243,7 +243,7 @@ public:
      *
      *  @param limit Maximum number of bytes to be read from
      *    the beginning of the file. Specifying UINT_MAX
-     *    resets the limit to the original end of the stream. 
+     *    resets the limit to the original end of the stream.
      *  Returns the previously set limit. */
     unsigned int SetReadLimit(unsigned int _limit)  {
         unsigned int prev = GetReadLimit();
diff --git a/code/X3DImporter.cpp b/code/X3DImporter.cpp
index cbeaa4623..2bd9d7544 100644
--- a/code/X3DImporter.cpp
+++ b/code/X3DImporter.cpp
@@ -49,7 +49,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "StringUtils.h"
 
 // Header files, Assimp.
-#include "DefaultIOSystem.h"
+#include <assimp/DefaultIOSystem.h>
 #include "fast_atof.h"
 
 // Header files, stdlib.
diff --git a/code/X3DImporter_Networking.cpp b/code/X3DImporter_Networking.cpp
index 4a75c9e66..d862cd7ef 100644
--- a/code/X3DImporter_Networking.cpp
+++ b/code/X3DImporter_Networking.cpp
@@ -48,7 +48,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "X3DImporter_Macro.hpp"
 
 // Header files, Assimp.
-#include "DefaultIOSystem.h"
+#include <assimp/DefaultIOSystem.h>
 
 namespace Assimp
 {
diff --git a/code/XFileExporter.cpp b/code/XFileExporter.cpp
index eeb5a1de1..30a0a21f8 100644
--- a/code/XFileExporter.cpp
+++ b/code/XFileExporter.cpp
@@ -48,7 +48,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "BaseImporter.h"
 #include "fast_atof.h"
 #include "SceneCombiner.h"
-#include "DefaultIOSystem.h"
+#include <assimp/DefaultIOSystem.h>
 #include <ctime>
 #include <set>
 #include <memory>
diff --git a/code/XFileHelper.h b/code/XFileHelper.h
index 69f2a98f6..49a41d153 100644
--- a/code/XFileHelper.h
+++ b/code/XFileHelper.h
@@ -51,7 +51,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/quaternion.h>
 #include <assimp/mesh.h>
 #include <assimp/anim.h>
-#include "Defines.h"
+#include <assimp/Defines.h>
 
 namespace Assimp
 {
diff --git a/code/XFileImporter.cpp b/code/XFileImporter.cpp
index 3b149a18a..ca5956d94 100644
--- a/code/XFileImporter.cpp
+++ b/code/XFileImporter.cpp
@@ -47,9 +47,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "XFileImporter.h"
 #include "XFileParser.h"
-#include "Defines.h"
 #include "TinyFormatter.h"
 #include "ConvertToLHProcess.h"
+#include <assimp/Defines.h>
 #include <assimp/IOSystem.hpp>
 #include <assimp/scene.h>
 #include <assimp/DefaultLogger.hpp>
diff --git a/code/glTFAsset.h b/code/glTFAsset.h
index 2a0de7bf3..10453efa6 100644
--- a/code/glTFAsset.h
+++ b/code/glTFAsset.h
@@ -62,7 +62,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifdef ASSIMP_API
 #   include <memory>
-#   include "DefaultIOSystem.h"
+#   include <assimp/DefaultIOSystem.h>
 #   include "ByteSwapper.h"
 #else
 #   include <memory>
diff --git a/code/glTFImporter.h b/code/glTFImporter.h
index 5d06730a5..7edcc83f2 100644
--- a/code/glTFImporter.h
+++ b/code/glTFImporter.h
@@ -41,7 +41,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define AI_GLTFIMPORTER_H_INC
 
 #include "BaseImporter.h"
-#include "DefaultIOSystem.h"
+#include <assimp/DefaultIOSystem.h>
 
 struct aiNode;
 
diff --git a/code/DefaultIOStream.h b/include/assimp/DefaultIOStream.h
similarity index 99%
rename from code/DefaultIOStream.h
rename to include/assimp/DefaultIOStream.h
index 294c5b797..f4c9af85d 100644
--- a/code/DefaultIOStream.h
+++ b/include/assimp/DefaultIOStream.h
@@ -45,7 +45,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <stdio.h>
 #include <assimp/IOStream.hpp>
 #include <assimp/importerdesc.h>
-#include "Defines.h"
+#include <assimp/Defines.h>
 
 namespace Assimp    {
 
diff --git a/code/DefaultIOSystem.h b/include/assimp/DefaultIOSystem.h
similarity index 98%
rename from code/DefaultIOSystem.h
rename to include/assimp/DefaultIOSystem.h
index 49960a847..b4986b330 100644
--- a/code/DefaultIOSystem.h
+++ b/include/assimp/DefaultIOSystem.h
@@ -48,7 +48,7 @@ namespace Assimp    {
 
 // ---------------------------------------------------------------------------
 /** Default implementation of IOSystem using the standard C file functions */
-class DefaultIOSystem : public IOSystem
+class ASSIMP_API DefaultIOSystem : public IOSystem
 {
 public:
     /** Constructor. */
diff --git a/code/Defines.h b/include/assimp/Defines.h
similarity index 100%
rename from code/Defines.h
rename to include/assimp/Defines.h
diff --git a/include/assimp/port/AndroidJNI/AndroidJNIIOSystem.h b/include/assimp/port/AndroidJNI/AndroidJNIIOSystem.h
index 6f806f922..41d800487 100644
--- a/include/assimp/port/AndroidJNI/AndroidJNIIOSystem.h
+++ b/include/assimp/port/AndroidJNI/AndroidJNIIOSystem.h
@@ -45,7 +45,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef AI_ANDROIDJNIIOSYSTEM_H_INC
 #define AI_ANDROIDJNIIOSYSTEM_H_INC
 
-#include "../code/DefaultIOSystem.h"
+#include <assimp/DefaultIOSystem.h>
 #include <android/asset_manager.h>
 #include <android/asset_manager_jni.h>
 #include <android/native_activity.h>
diff --git a/port/AndroidJNI/AndroidJNIIOSystem.cpp b/port/AndroidJNI/AndroidJNIIOSystem.cpp
index f2becdcb0..e276ea59f 100644
--- a/port/AndroidJNI/AndroidJNIIOSystem.cpp
+++ b/port/AndroidJNI/AndroidJNIIOSystem.cpp
@@ -55,7 +55,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <android/native_activity.h>
 #include <assimp/ai_assert.h>
 #include <assimp/port/AndroidJNI/AndroidJNIIOSystem.h>
-#include <code/DefaultIOStream.h>
+#include <assimp/DefaultIOStream.h>
 #include <fstream>
 
 using namespace Assimp;
diff --git a/test/unit/TestIOStream.h b/test/unit/TestIOStream.h
index a979caec8..3dbfc45e3 100644
--- a/test/unit/TestIOStream.h
+++ b/test/unit/TestIOStream.h
@@ -39,7 +39,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 #pragma once
 
-#include "DefaultIOStream.h"
+#include <assimp/DefaultIOStream.h>
 
 using namespace ::Assimp;
 
diff --git a/test/unit/utImporter.cpp b/test/unit/utImporter.cpp
index ac1f0194f..a2ba25ac2 100644
--- a/test/unit/utImporter.cpp
+++ b/test/unit/utImporter.cpp
@@ -45,7 +45,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/Importer.hpp>
 #include <BaseImporter.h>
 #include "TestIOSystem.h"
-#include "DefaultIOSystem.h"
+#include <assimp/DefaultIOSystem.h>
 
 using namespace ::std;
 using namespace ::Assimp;
@@ -53,12 +53,12 @@ using namespace ::Assimp;
 class ImporterTest : public ::testing::Test
 {
 public:
-    virtual void SetUp() { 
-        pImp = new Importer(); 
+    virtual void SetUp() {
+        pImp = new Importer();
     }
-    
-    virtual void TearDown() { 
-        delete pImp; 
+
+    virtual void TearDown() {
+        delete pImp;
     }
 
 protected:
@@ -275,4 +275,4 @@ TEST_F(ImporterTest, testMultipleReads)
 TEST_F( ImporterTest, SearchFileHeaderForTokenTest ) {
     //DefaultIOSystem ioSystem;
 //    BaseImporter::SearchFileHeaderForToken( &ioSystem, assetPath, Token, 2 )
-}
\ No newline at end of file
+}