diff --git a/src/osgWrappers/serializers/osg/LibraryWrapper.cpp b/src/osgWrappers/serializers/osg/LibraryWrapper.cpp
index 18ad045c4..b6f28b0e2 100644
--- a/src/osgWrappers/serializers/osg/LibraryWrapper.cpp
+++ b/src/osgWrappers/serializers/osg/LibraryWrapper.cpp
@@ -23,8 +23,6 @@ USE_SERIALIZER_WRAPPER(ClusterCullingCallback)
 USE_SERIALIZER_WRAPPER(ColorMask)
 USE_SERIALIZER_WRAPPER(ColorMatrix)
 USE_SERIALIZER_WRAPPER(CompositeShape)
-USE_SERIALIZER_WRAPPER(ComputeBoundingBoxCallback)
-USE_SERIALIZER_WRAPPER(ComputeBoundingSphereCallback)
 USE_SERIALIZER_WRAPPER(Cone)
 USE_SERIALIZER_WRAPPER(ConvexHull)
 USE_SERIALIZER_WRAPPER(ConvexPlanarOccluder)