diff --git a/include/assimp/mesh.h b/include/assimp/mesh.h
index 95651bd17..427dba008 100644
--- a/include/assimp/mesh.h
+++ b/include/assimp/mesh.h
@@ -414,7 +414,7 @@ enum aiPrimitiveType {
      * @see aiProcess_Triangulate
      * @link https://github.com/KhronosGroup/glTF/pull/1620
      */
-    aiPrimitiveType_NGONEncodingFlag = 0x16,
+    aiPrimitiveType_NGONEncodingFlag = 0x10,
 
 /** This value is not used. It is just here to force the
      *  compiler to map this enum to a 32 Bit integer.