diff --git a/src/vsgQt/ViewerWindow.cpp b/src/vsgQt/ViewerWindow.cpp
index ed4df79..8306bff 100644
--- a/src/vsgQt/ViewerWindow.cpp
+++ b/src/vsgQt/ViewerWindow.cpp
@@ -23,7 +23,6 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 
 #include <vulkan/vulkan.h>
 
-#include <vsgQt/ProxyWindow.h>
 #include <vsgQt/ViewerWindow.h>
 
 using namespace vsgQt;