diff --git a/applications/osgviewer/osgviewer.cpp b/applications/osgviewer/osgviewer.cpp
index cec9a5f7c..248e9e891 100644
--- a/applications/osgviewer/osgviewer.cpp
+++ b/applications/osgviewer/osgviewer.cpp
@@ -31,6 +31,7 @@
 #include <osgGA/Device>
 
 #include <iostream>
+#include <stdint.h>
 
 #include <osg/GLExtensions>