diff --git a/include/osg/BufferObject b/include/osg/BufferObject
index a3643bf72..b69000cc8 100644
--- a/include/osg/BufferObject
+++ b/include/osg/BufferObject
@@ -543,7 +543,7 @@ class OSG_EXPORT BufferObject : public Object
         mutable GLBufferObjects _glBufferObjects;
 };
 
-class BufferData : public Object
+class OSG_EXPORT BufferData : public Object
 {
     public: