diff --git a/code/D3MFImporter.cpp b/code/D3MFImporter.cpp
index 3c1f7ba68..0777a55fa 100644
--- a/code/D3MFImporter.cpp
+++ b/code/D3MFImporter.cpp
@@ -58,7 +58,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <memory>
 
 #include "D3MFOpcPackage.h"
-#include <contrib/unzip/unzip.h>
+#include <unzip.h>
 #include <assimp/irrXMLWrapper.h>
 #include "3MFXmlTags.h"
 
diff --git a/code/D3MFOpcPackage.cpp b/code/D3MFOpcPackage.cpp
index b6abc0b98..a7039d34e 100644
--- a/code/D3MFOpcPackage.cpp
+++ b/code/D3MFOpcPackage.cpp
@@ -56,7 +56,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <map>
 #include <algorithm>
 #include <cassert>
-#include <contrib/unzip/unzip.h>
+#include <unzip.h>
 #include "3MFXmlTags.h"
 
 namespace Assimp {
diff --git a/code/Importer/IFC/IFCLoader.cpp b/code/Importer/IFC/IFCLoader.cpp
index 0849e01d5..de7a37037 100644
--- a/code/Importer/IFC/IFCLoader.cpp
+++ b/code/Importer/IFC/IFCLoader.cpp
@@ -52,7 +52,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <tuple>
 
 #ifndef ASSIMP_BUILD_NO_COMPRESSED_IFC
-#   include <contrib/unzip/unzip.h>
+#   include <unzip.h>
 #endif
 
 #include "IFCLoader.h"
diff --git a/code/Q3BSPZipArchive.h b/code/Q3BSPZipArchive.h
index db1303d19..606f7b183 100644
--- a/code/Q3BSPZipArchive.h
+++ b/code/Q3BSPZipArchive.h
@@ -42,7 +42,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef AI_Q3BSP_ZIPARCHIVE_H_INC
 #define AI_Q3BSP_ZIPARCHIVE_H_INC
 
-#include <contrib/unzip/unzip.h>
+#include <unzip.h>
 #include <assimp/IOStream.hpp>
 #include <assimp/IOSystem.hpp>
 #include <vector>