diff --git a/genwrapper.conf b/genwrapper.conf
index 6340b59dd..393bb5c7d 100644
--- a/genwrapper.conf
+++ b/genwrapper.conf
@@ -281,11 +281,13 @@ suppress reflector "osgDB::Output"
 # some types are incorrectly detected as value type or object type. Here we
 # specify the type kind explicitly
 
-configure reflector "osgDB::ReentrantMutex"
+suppress reflector "OpenThreads::Mutex"
+
+configure reflector "OpenThreads::ReentrantMutex"
 	object-type
 end
 
-configure reflector "osgDB::ReadWriteMutex"
+configure reflector "OpenThreads::ReadWriteMutex"
 	object-type
 end
 
@@ -297,8 +299,6 @@ configure reflector "osg::GraphicsContext"
 	object-type
 end
 
-suppress reflector "OpenThreads::Mutex"
-
 #############################################################################
 
 # Doxygen doesn't parse ReadFunc and WriteFunc correctly...