diff -r 7a009eea571a libgui/src/octave-gui.cc
--- a/libgui/src/octave-gui.cc	Mon Sep 17 08:50:46 2012 -0400
+++ b/libgui/src/octave-gui.cc	Mon Sep 17 21:12:21 2012 -0500
@@ -82,7 +82,7 @@
 {
   dissociate_terminal ();
 
-  setenv ("GNUTERM", "qt", 1);
+  octave_putenv ("GNUTERM", "qt");
 
   QApplication application (argc, argv);