diff --git a/include/osg/Export b/include/osg/Export
index 1b444abc1..fd2b58bbb 100644
--- a/include/osg/Export
+++ b/include/osg/Export
@@ -26,6 +26,7 @@
     #pragma warning( disable : 4251 )
     #pragma warning( disable : 4275 )
     #pragma warning( disable : 4512 )
+    #pragma warning( disable : 4267 )
 #endif
 
 #if defined(_MSC_VER) || defined(__CYGWIN__) || defined(__MINGW32__) || defined( __BCPLUSPLUS__)  || defined( __MWERKS__)