diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index 780b28a71..7ad49ad33 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -557,6 +557,8 @@ SET( PostProcessing_SRCS
   FindInvalidDataProcess.h
   FixNormalsStep.cpp
   FixNormalsStep.h
+  DropFaceNormalsProcess.cpp
+  DropFaceNormalsProcess.h
   GenFaceNormalsProcess.cpp
   GenFaceNormalsProcess.h
   GenVertexNormalsProcess.cpp
diff --git a/code/PostStepRegistry.cpp b/code/PostStepRegistry.cpp
index 6c25b9361..a04092d3a 100644
--- a/code/PostStepRegistry.cpp
+++ b/code/PostStepRegistry.cpp
@@ -62,6 +62,9 @@ corresponding preprocessor flag to selectively disable steps.
 #ifndef ASSIMP_BUILD_NO_TRIANGULATE_PROCESS
 #   include "TriangulateProcess.h"
 #endif
+#ifndef ASSIMP_BUILD_NO_DROPFACENORMALS_PROCESS
+#   include "DropFaceNormalsProcess.h"
+#endif
 #ifndef ASSIMP_BUILD_NO_GENFACENORMALS_PROCESS
 #   include "GenFaceNormalsProcess.h"
 #endif
diff --git a/include/assimp/defs.h b/include/assimp/defs.h
index e2ce6953d..e651a1f7b 100644
--- a/include/assimp/defs.h
+++ b/include/assimp/defs.h
@@ -97,6 +97,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  * CALCTANGENTS
  * JOINVERTICES
  * TRIANGULATE
+ * DROPFACENORMALS
  * GENFACENORMALS
  * GENVERTEXNORMALS
  * REMOVEVC