diff --git a/src/osgViewer/GraphicsWindowCarbon.cpp b/src/osgViewer/GraphicsWindowCarbon.cpp
index 0fbb6f21c..18169b3f0 100644
--- a/src/osgViewer/GraphicsWindowCarbon.cpp
+++ b/src/osgViewer/GraphicsWindowCarbon.cpp
@@ -1100,3 +1100,6 @@ public:
 REGISTER_WINDOWINGSYSTEMINTERFACE(Carbon, CarbonWindowingSystemInterface)
 
 }
+
+#endif
+