diff --git a/code/OpenGEXImporter.cpp b/code/OpenGEXImporter.cpp
index 4172ae97b..c495773a9 100644
--- a/code/OpenGEXImporter.cpp
+++ b/code/OpenGEXImporter.cpp
@@ -37,7 +37,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ----------------------------------------------------------------------
 */
-#ifndef ASSIMP_BUILD_NO_OPEMGEX_IMPORTER
+#ifndef ASSIMP_BUILD_NO_OPENGEX_IMPORTER
 
 #include "AssimpPCH.h"
 #include "OpenGEXImporter.h"
@@ -502,4 +502,4 @@ void OpenGEXImporter::clearNodeStack() {
 } // Namespace OpenGEX
 } // Namespace Assimp
 
-#endif // ASSIMP_BUILD_NO_OPEMGEX_IMPORTER
+#endif // ASSIMP_BUILD_NO_OPENGEX_IMPORTER
diff --git a/code/OpenGEXImporter.h b/code/OpenGEXImporter.h
index 13154e06d..5355f0dea 100644
--- a/code/OpenGEXImporter.h
+++ b/code/OpenGEXImporter.h
@@ -40,7 +40,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef AI_OPENGEX_IMPORTER_H
 #define AI_OPENGEX_IMPORTER_H
 
-#ifndef ASSIMP_BUILD_NO_OPEMGEX_IMPORTER
+#ifndef ASSIMP_BUILD_NO_OPENGEX_IMPORTER
 
 #include "BaseImporter.h"
 
@@ -141,6 +141,6 @@ private:
 } // Namespace OpenGEX
 } // Namespace Assimp
 
-#endif // ASSIMP_BUILD_NO_OPEMGEX_IMPORTER
+#endif // ASSIMP_BUILD_NO_OPENGEX_IMPORTER
 
 #endif // AI_OPENGEX_IMPORTER_H