diff --git a/src/Model/panelnode.cxx b/src/Model/panelnode.cxx
index e3f9e4958..55973b003 100644
--- a/src/Model/panelnode.cxx
+++ b/src/Model/panelnode.cxx
@@ -5,7 +5,6 @@
 #include <simgear/compiler.h>
 #include <vector>
 
-#include <GL/gl.h>
 #include <plib/sg.h>
 
 #include <Cockpit/panel.hxx>