diff --git a/include/osgDB/fstream b/include/osgDB/fstream
index f25adb4dc..3f6b803af 100644
--- a/include/osgDB/fstream
+++ b/include/osgDB/fstream
@@ -15,6 +15,7 @@
 #define OSGDB_FSTREAM 1
 
 #include <osgDB/Export>
+#include <osg/Export>
 
 #include <fstream>
 
diff --git a/include/osgWidget/Export b/include/osgWidget/Export
index 4d181de14..54f8c440d 100644
--- a/include/osgWidget/Export
+++ b/include/osgWidget/Export
@@ -17,6 +17,7 @@
 #define OSGWIDGET_EXPORT_ 1
 
 #if defined(_MSC_VER)
+    #pragma warning( disable : 4121 )
     #pragma warning( disable : 4244 )
     #pragma warning( disable : 4251 )
     #pragma warning( disable : 4267 )