--- src/Makefile.in.orig	2012-02-29 10:30:44.000000000 -0600
+++ src/Makefile.in	2012-08-13 21:17:17.000000000 -0500
@@ -1095,7 +1095,7 @@
 
 ../GV : GV.ad
 	@echo "creating GV"
-	sed -e 's/^[^!]/!&/' GV.ad > ../GV
+	LANG=C sed -e 's/^[^!]/!&/' GV.ad > ../GV
 
 GV.ad : gv_system.ad
 	@echo "creating GV.ad"