diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index 17a30502a..4a201a536 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -197,6 +197,7 @@ MACRO(ADD_ASSIMP_IMPORTER name)
     SET(${name}_SRC "")
     SET(ASSIMP_IMPORTERS_DISABLED "${ASSIMP_IMPORTERS_DISABLED} ${name}")
     add_definitions(-DASSIMP_BUILD_NO_${name}_IMPORTER)
+    add_definitions(-DASSIMP_BUILD_NO_${name}_EXPORTER)
   ENDIF()
 ENDMACRO()
 
diff --git a/code/Exporter.cpp b/code/Exporter.cpp
index e6ab20fdf..bdfea82b6 100644
--- a/code/Exporter.cpp
+++ b/code/Exporter.cpp
@@ -101,7 +101,7 @@ Exporter::ExportFormatEntry gExporters[] =
     Exporter::ExportFormatEntry( "collada", "COLLADA - Digital Asset Exchange Schema", "dae", &ExportSceneCollada),
 #endif
 
-#ifndef ASSIMP_BUILD_NO_XFILE_EXPORTER
+#ifndef ASSIMP_BUILD_NO_X_EXPORTER
     Exporter::ExportFormatEntry( "x", "X Files", "x", &ExportSceneXFile,
         aiProcess_MakeLeftHanded | aiProcess_FlipWindingOrder | aiProcess_FlipUVs),
 #endif
diff --git a/code/XFileExporter.cpp b/code/XFileExporter.cpp
index e3a46a1da..eeb5a1de1 100644
--- a/code/XFileExporter.cpp
+++ b/code/XFileExporter.cpp
@@ -41,7 +41,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 #ifndef ASSIMP_BUILD_NO_EXPORT
-#ifndef ASSIMP_BUILD_NO_XFILE_EXPORTER
+#ifndef ASSIMP_BUILD_NO_X_EXPORTER
 #include "XFileExporter.h"
 #include "ConvertToLHProcess.h"
 #include "Bitmap.h"