diff --git a/include/osg/CameraNode b/include/osg/CameraNode
index 0769ac5b6..63a4566f6 100644
--- a/include/osg/CameraNode
+++ b/include/osg/CameraNode
@@ -305,7 +305,7 @@ class OSG_EXPORT CameraNode : public Transform, public CullSettings
         /** Get the const post draw callback.*/
         const DrawCallback* getPostDrawCallback() const { return _postDrawCallback.get(); }
  
-        OpenThreads::Mutex& getDataChangeMutex() const { return _dataChangeMutex; }
+        OpenThreads::Mutex* getDataChangeMutex() const { return &_dataChangeMutex; }
 
     public:
 
diff --git a/src/osgUtil/CullVisitor.cpp b/src/osgUtil/CullVisitor.cpp
index 6c630d113..23e524182 100644
--- a/src/osgUtil/CullVisitor.cpp
+++ b/src/osgUtil/CullVisitor.cpp
@@ -1104,7 +1104,7 @@ void CullVisitor::apply(osg::CameraNode& camera)
         osg::ref_ptr<osgUtil::RenderStage> rtts = dynamic_cast<osgUtil::RenderStage*>(camera.getRenderingCache(contextID));
         if (!rtts)
         {
-            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(camera.getDataChangeMutex());
+            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(*(camera.getDataChangeMutex()));
         
             rtts = new osgUtil::RenderStage;
             rtts->setCameraNode(&camera);
diff --git a/src/osgUtil/RenderStage.cpp b/src/osgUtil/RenderStage.cpp
index d2d65b385..b3cb949c3 100644
--- a/src/osgUtil/RenderStage.cpp
+++ b/src/osgUtil/RenderStage.cpp
@@ -286,7 +286,7 @@ void RenderStage::runCameraSetUp(osg::State& state)
         {
             osg::notify(osg::INFO)<<"Setting up osg::CameraNode::FRAME_BUFFER_OBJECT"<<std::endl;
 
-            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_camera->getDataChangeMutex());
+            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(*(_camera->getDataChangeMutex()));
 
             _fbo = new osg::FrameBufferObject;
 
diff --git a/src/osgWrappers/osg/CameraNode.cpp b/src/osgWrappers/osg/CameraNode.cpp
index 443fc1444..4cb330ade 100644
--- a/src/osgWrappers/osg/CameraNode.cpp
+++ b/src/osgWrappers/osg/CameraNode.cpp
@@ -135,14 +135,14 @@ BEGIN_OBJECT_REFLECTOR(osg::CameraNode)
 	I_Method1(void, setPostDrawCallback, IN, osg::CameraNode::DrawCallback *, cb);
 	I_Method0(osg::CameraNode::DrawCallback *, getPostDrawCallback);
 	I_Method0(const osg::CameraNode::DrawCallback *, getPostDrawCallback);
-	I_Method0(OpenThreads::Mutex &, getDataChangeMutex);
+	I_Method0(OpenThreads::Mutex *, getDataChangeMutex);
 	I_Method2(bool, computeLocalToWorldMatrix, IN, osg::Matrix &, matrix, IN, osg::NodeVisitor *, x);
 	I_Method2(bool, computeWorldToLocalMatrix, IN, osg::Matrix &, matrix, IN, osg::NodeVisitor *, x);
 	I_ReadOnlyProperty(osg::CameraNode::BufferAttachmentMap &, BufferAttachmentMap);
 	I_Property(const osg::Vec4 &, ClearColor);
 	I_Property(GLbitfield, ClearMask);
 	I_Property(osg::ColorMask *, ColorMask);
-	I_ReadOnlyProperty(OpenThreads::Mutex &, DataChangeMutex);
+	I_ReadOnlyProperty(OpenThreads::Mutex *, DataChangeMutex);
 	I_Property(GLenum, DrawBuffer);
 	I_Property(osg::GraphicsContext *, GraphicsContext);
 	I_ReadOnlyProperty(osg::Matrixd, InverseViewMatrix);