diff --git a/code/AssetLib/glTF/glTFAsset.h b/code/AssetLib/glTF/glTFAsset.h
index d6d1dd372..15947c8c6 100644
--- a/code/AssetLib/glTF/glTFAsset.h
+++ b/code/AssetLib/glTF/glTFAsset.h
@@ -1,4 +1,4 @@
-/*
+/*
 Open Asset Import Library (assimp)
 ----------------------------------------------------------------------
 
@@ -49,7 +49,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef GLTFASSET_H_INC
 #define GLTFASSET_H_INC
 
-#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_IMPORTER)
 
 #include <assimp/Exceptional.h>
 
diff --git a/code/AssetLib/glTF/glTFAssetWriter.h b/code/AssetLib/glTF/glTFAssetWriter.h
index f166ee532..ed81d12cd 100644
--- a/code/AssetLib/glTF/glTFAssetWriter.h
+++ b/code/AssetLib/glTF/glTFAssetWriter.h
@@ -50,7 +50,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef GLTFASSETWRITER_H_INC
 #define GLTFASSETWRITER_H_INC
 
-#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_IMPORTER)
 
 #include "glTFAsset.h"
 
diff --git a/code/AssetLib/glTF/glTFExporter.h b/code/AssetLib/glTF/glTFExporter.h
index 415992314..fe7592566 100644
--- a/code/AssetLib/glTF/glTFExporter.h
+++ b/code/AssetLib/glTF/glTFExporter.h
@@ -46,7 +46,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef AI_GLTFEXPORTER_H_INC
 #define AI_GLTFEXPORTER_H_INC
 
-#ifndef ASSIMP_BUILD_NO_GLTF_EXPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_EXPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_EXPORTER)
 
 #include <assimp/types.h>
 #include <assimp/material.h>
diff --git a/code/AssetLib/glTF/glTFImporter.cpp b/code/AssetLib/glTF/glTFImporter.cpp
index b4ef9b06f..ef24592ae 100644
--- a/code/AssetLib/glTF/glTFImporter.cpp
+++ b/code/AssetLib/glTF/glTFImporter.cpp
@@ -1,4 +1,4 @@
-/*
+/*
 Open Asset Import Library (assimp)
 ----------------------------------------------------------------------
 
@@ -39,7 +39,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ----------------------------------------------------------------------
 */
 
-#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_IMPORTER)
 
 #include "AssetLib/glTF/glTFImporter.h"
 #include "AssetLib/glTF/glTFAsset.h"
diff --git a/code/AssetLib/glTF2/glTF2Asset.h b/code/AssetLib/glTF2/glTF2Asset.h
index 7a167eaed..e45b53006 100644
--- a/code/AssetLib/glTF2/glTF2Asset.h
+++ b/code/AssetLib/glTF2/glTF2Asset.h
@@ -50,7 +50,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef GLTF2ASSET_H_INC
 #define GLTF2ASSET_H_INC
 
-#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF2_IMPORTER)
 
 #include <assimp/Exceptional.h>
 
diff --git a/code/AssetLib/glTF2/glTF2AssetWriter.h b/code/AssetLib/glTF2/glTF2AssetWriter.h
index 784ab2ea5..ce58717f3 100644
--- a/code/AssetLib/glTF2/glTF2AssetWriter.h
+++ b/code/AssetLib/glTF2/glTF2AssetWriter.h
@@ -50,7 +50,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef GLTF2ASSETWRITER_H_INC
 #define GLTF2ASSETWRITER_H_INC
 
-#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF2_IMPORTER)
 
 #include "glTF2Asset.h"
 
diff --git a/code/AssetLib/glTF2/glTF2Exporter.h b/code/AssetLib/glTF2/glTF2Exporter.h
index 421a4806e..1d28ed459 100644
--- a/code/AssetLib/glTF2/glTF2Exporter.h
+++ b/code/AssetLib/glTF2/glTF2Exporter.h
@@ -46,7 +46,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef AI_GLTF2EXPORTER_H_INC
 #define AI_GLTF2EXPORTER_H_INC
 
-#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF2_IMPORTER)
 
 #include <assimp/types.h>
 #include <assimp/material.h>
diff --git a/code/AssetLib/glTF2/glTF2Importer.cpp b/code/AssetLib/glTF2/glTF2Importer.cpp
index 4d740d8c1..323f29f8e 100644
--- a/code/AssetLib/glTF2/glTF2Importer.cpp
+++ b/code/AssetLib/glTF2/glTF2Importer.cpp
@@ -39,7 +39,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ----------------------------------------------------------------------
 */
 
-#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF2_IMPORTER)
 
 #include "AssetLib/glTF2/glTF2Importer.h"
 #include "PostProcessing/MakeVerboseFormat.h"
diff --git a/code/Common/Exporter.cpp b/code/Common/Exporter.cpp
index 77ac4b7a6..031d5c24e 100644
--- a/code/Common/Exporter.cpp
+++ b/code/Common/Exporter.cpp
@@ -179,11 +179,14 @@ static void setupExporterArray(std::vector<Exporter::ExportFormatEntry> &exporte
 			aiProcess_Triangulate | aiProcess_SortByPType | aiProcess_JoinIdenticalVertices));
 #endif
 
-#ifndef ASSIMP_BUILD_NO_GLTF_EXPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_EXPORTER) && !defined(ASSIMP_BUILD_NO_GLTF2_EXPORTER)
 	exporters.push_back(Exporter::ExportFormatEntry("gltf2", "GL Transmission Format v. 2", "gltf", &ExportSceneGLTF2,
 			aiProcess_JoinIdenticalVertices | aiProcess_Triangulate | aiProcess_SortByPType));
 	exporters.push_back(Exporter::ExportFormatEntry("glb2", "GL Transmission Format v. 2 (binary)", "glb", &ExportSceneGLB2,
 			aiProcess_JoinIdenticalVertices | aiProcess_Triangulate | aiProcess_SortByPType));
+#endif
+
+#if !defined(ASSIMP_BUILD_NO_GLTF_EXPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_EXPORTER)
 	exporters.push_back(Exporter::ExportFormatEntry("gltf", "GL Transmission Format", "gltf", &ExportSceneGLTF,
 			aiProcess_JoinIdenticalVertices | aiProcess_Triangulate | aiProcess_SortByPType));
 	exporters.push_back(Exporter::ExportFormatEntry("glb", "GL Transmission Format (binary)", "glb", &ExportSceneGLB,
diff --git a/code/Common/ImporterRegistry.cpp b/code/Common/ImporterRegistry.cpp
index da51696bc..c24f39a31 100644
--- a/code/Common/ImporterRegistry.cpp
+++ b/code/Common/ImporterRegistry.cpp
@@ -1,4 +1,4 @@
-/*
+/*
 ---------------------------------------------------------------------------
 Open Asset Import Library (assimp)
 ---------------------------------------------------------------------------
@@ -179,8 +179,10 @@ corresponding preprocessor flag to selectively disable formats.
 #ifndef ASSIMP_BUILD_NO_ASSBIN_IMPORTER
 #include "AssetLib/Assbin/AssbinLoader.h"
 #endif
-#ifndef ASSIMP_BUILD_NO_GLTF_IMPORTER
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_IMPORTER)
 #include "AssetLib/glTF/glTFImporter.h"
+#endif
+#if !defined(ASSIMP_BUILD_NO_GLTF_IMPORTER) && !defined(ASSIMP_BUILD_NO_GLTF2_IMPORTER)
 #include "AssetLib/glTF2/glTF2Importer.h"
 #endif
 #ifndef ASSIMP_BUILD_NO_C4D_IMPORTER
@@ -339,8 +341,10 @@ void GetImporterInstanceList(std::vector<BaseImporter *> &out) {
 #if (!defined ASSIMP_BUILD_NO_ASSBIN_IMPORTER)
     out.push_back(new AssbinImporter());
 #endif
-#if (!defined ASSIMP_BUILD_NO_GLTF_IMPORTER)
+#if (!defined ASSIMP_BUILD_NO_GLTF_IMPORTER && !defined ASSIMP_BUILD_NO_GLTF1_IMPORTER)
     out.push_back(new glTFImporter());
+#endif
+#if (!defined ASSIMP_BUILD_NO_GLTF_IMPORTER && !defined ASSIMP_BUILD_NO_GLTF2_IMPORTER)
     out.push_back(new glTF2Importer());
 #endif
 #if (!defined ASSIMP_BUILD_NO_C4D_IMPORTER)