diff --git a/CMakeLists.txt b/CMakeLists.txt
index 478078348..360351731 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -498,7 +498,7 @@ foreach(x11ext Xshape Xinerama Xrandr Xrender Xfixes Xcursor Xinput)
 endforeach()
 if(NOT X11_Xext_FOUND)
     message(WARNING "The X11 Xext extension was not found")
-    katie_definition(-DQT_NO_XSYNC -DQT_NO_XSHAPE -DQTT_NO_XSHM)
+    katie_definition(-DQT_NO_XSYNC -DQT_NO_XSHAPE -DQT_NO_XSHM)
 endif()
 if(NOT X11_SM_FOUND)
     message(WARNING "X11 SM was not found thus disabling session manager support")