diff --git a/include/osgUtil/DrawElementTypeSimplifier b/include/osgUtil/DrawElementTypeSimplifier
index 169028cc6..226369e6a 100644
--- a/include/osgUtil/DrawElementTypeSimplifier
+++ b/include/osgUtil/DrawElementTypeSimplifier
@@ -17,6 +17,8 @@
 #include <osg/Geometry>
 #include <osg/NodeVisitor>
 
+#include <osgUtil/Export>
+
 namespace osgUtil
 {