diff --git a/include/osg/BufferObject b/include/osg/BufferObject
index 43ed35597..e6694e701 100644
--- a/include/osg/BufferObject
+++ b/include/osg/BufferObject
@@ -211,8 +211,6 @@ class OSG_EXPORT BufferObject : public Object
     
         virtual ~BufferObject();
         
-        unsigned int computeRequiredTotalSize() const;
-        
         typedef osg::buffered_value<GLuint> GLObjectList;
 
         typedef std::pair< BufferEntry, ref_ptr<Array> >        BufferEntryArrayPair;
@@ -254,8 +252,6 @@ class OSG_EXPORT PixelBufferObject : public BufferObject
     
         virtual ~PixelBufferObject();
         
-        unsigned int computeRequiredTotalSize() const;
-        
         BufferEntryImagePair _bufferEntryImagePair;
 };