diff --git a/src/osgViewer/GraphicsWindowCarbon.cpp b/src/osgViewer/GraphicsWindowCarbon.cpp
index a49f451be..65b0ff164 100644
--- a/src/osgViewer/GraphicsWindowCarbon.cpp
+++ b/src/osgViewer/GraphicsWindowCarbon.cpp
@@ -1101,7 +1101,7 @@ public:
 }
 
 #if 1
-REGISTER_WINDOWINGSYSTEMINTERFACE(Carbon, osgViewer::CarbonWindowingSystemInterface)
+REGISTER_WINDOWINGSYSTEMINTERFACE(Carbon, CarbonWindowingSystemInterface)
 #else
 
 #ifdef USE_DARWIN_CARBON_IMPLEMENTATION
diff --git a/src/osgViewer/GraphicsWindowCocoa.mm b/src/osgViewer/GraphicsWindowCocoa.mm
index c682932b3..e2afd5173 100644
--- a/src/osgViewer/GraphicsWindowCocoa.mm
+++ b/src/osgViewer/GraphicsWindowCocoa.mm
@@ -1830,7 +1830,7 @@ private:
 }
 
 #if 1
-REGISTER_WINDOWINGSYSTEMINTERFACE(Cocoa, osgViewer::CocoaWindowingSystemInterface)
+REGISTER_WINDOWINGSYSTEMINTERFACE(Cocoa, CocoaWindowingSystemInterface)
 #else
 #ifdef USE_DARWIN_COCOA_IMPLEMENTATION
 RegisterWindowingSystemInterfaceProxy<osgViewer::CocoaWindowingSystemInterface> createWindowingSystemInterfaceProxy;
diff --git a/src/osgViewer/GraphicsWindowIOS.mm b/src/osgViewer/GraphicsWindowIOS.mm
index 6127080d0..0c647e5ba 100644
--- a/src/osgViewer/GraphicsWindowIOS.mm
+++ b/src/osgViewer/GraphicsWindowIOS.mm
@@ -1227,7 +1227,7 @@ public:
 }//end namspace
 
 #if 1
-REGISTER_WINDOWINGSYSTEMINTERFACE(IOS, osgViewer::ConcreteIOSWindowingSystemInterface)
+REGISTER_WINDOWINGSYSTEMINTERFACE(IOS, ConcreteIOSWindowingSystemInterface)
 #else
 RegisterWindowingSystemInterfaceProxy<osgViewer::ConcreteIOSWindowingSystemInterface> createWindowingSystemInterfaceProxy;