diff --git a/utils/Modeller/3dconvert.cxx b/utils/Modeller/3dconvert.cxx
index db9859e3e..7cc7f6171 100644
--- a/utils/Modeller/3dconvert.cxx
+++ b/utils/Modeller/3dconvert.cxx
@@ -6,7 +6,7 @@
 
 #include <iostream>
 
-#include SG_GLUT_H
+#include <GL/glut.h>
 
 #include <plib/ssg.h>