diff --git a/retroshare-gui/src/gui/MainWindow.h b/retroshare-gui/src/gui/MainWindow.h
index 79ccb2c78..edc085806 100644
--- a/retroshare-gui/src/gui/MainWindow.h
+++ b/retroshare-gui/src/gui/MainWindow.h
@@ -44,7 +44,7 @@
 #include "help/browser/helpbrowser.h"
 
 #include "ui_MainWindow.h"
-#include "gui/common/RWindow.h"
+#include "gui/common/rwindow.h"
 
 class PeerStatus;
 class NATStatus;