diff --git a/src/GUI/gui_funcs.cxx b/src/GUI/gui_funcs.cxx
index 4a3bd8793..7c4a5171c 100644
--- a/src/GUI/gui_funcs.cxx
+++ b/src/GUI/gui_funcs.cxx
@@ -89,7 +89,6 @@
 
 #include "gui.h"
 #include "gui_local.hxx"
-#include "sgVec3Slider.hxx"
 
 SG_USING_STD(string);
 SG_USING_STD(cout);