diff --git a/src/osgWrappers/serializers/osg/LibraryWrapper.cpp b/src/osgWrappers/serializers/osg/LibraryWrapper.cpp
index 5c860e844..f178a5422 100644
--- a/src/osgWrappers/serializers/osg/LibraryWrapper.cpp
+++ b/src/osgWrappers/serializers/osg/LibraryWrapper.cpp
@@ -12,6 +12,7 @@ USE_SERIALIZER_WRAPPER(BlendEquation)
 USE_SERIALIZER_WRAPPER(BlendFunc)
 USE_SERIALIZER_WRAPPER(BoolValueObject)
 USE_SERIALIZER_WRAPPER(Box)
+USE_SERIALIZER_WRAPPER(Callback)
 USE_SERIALIZER_WRAPPER(Camera)
 USE_SERIALIZER_WRAPPER(CameraView)
 USE_SERIALIZER_WRAPPER(Capsule)