diff --git a/src/osg/BufferObject.cpp b/src/osg/BufferObject.cpp
index 4fb220283..b4bdc918c 100644
--- a/src/osg/BufferObject.cpp
+++ b/src/osg/BufferObject.cpp
@@ -222,13 +222,13 @@ void GLBufferObject::compileBuffer()
                 for(osg::Image::DataIterator img_itr(image); img_itr.valid(); ++img_itr)
                 {
                     //OSG_NOTICE<<"Copying to buffer object using DataIterator, offset="<<offset<<", size="<<img_itr.size()<<", data="<<(void*)img_itr.data()<<std::endl;
-                    _extensions->glBufferSubData(_profile._target, (GLintptrARB)offset, (GLsizeiptrARB)img_itr.size(), img_itr.data());
+                    _extensions->glBufferSubData(_profile._target, (GLintptr)offset, (GLsizeiptr)img_itr.size(), img_itr.data());
                     offset += img_itr.size();
                 }
             }
             else
             {
-                _extensions->glBufferSubData(_profile._target, (GLintptrARB)entry.offset, (GLsizeiptrARB)entry.dataSize, entry.dataSource->getDataPointer());
+                _extensions->glBufferSubData(_profile._target, (GLintptr)entry.offset, (GLsizeiptr)entry.dataSize, entry.dataSource->getDataPointer());
             }
         }
     }