diff --git a/include/osg/VertexArrayState b/include/osg/VertexArrayState
index bd09b5fc5..ce1924e1d 100644
--- a/include/osg/VertexArrayState
+++ b/include/osg/VertexArrayState
@@ -21,7 +21,7 @@
 
 namespace osg {
 
-class VertexArrayState : public osg::Referenced
+class OSG_EXPORT VertexArrayState : public osg::Referenced
 {
 public: