diff --git a/bin/9c b/bin/9c
index c320d946..9129315b 100755
--- a/bin/9c
+++ b/bin/9c
@@ -45,8 +45,8 @@ esac
 
 case "$tag" in
 *SunOS*-cc)
-	exec $cc -I$PLAN9/include $cflags "$@" | 
-		/bin/sed 's/\"\([^\"][^\"]*\)\", line \([0-9][0-9]*\)/\1:\2/g'
+	exec $cc -I$PLAN9/include $cflags "$@" 2>&1 | 
+		/bin/sed 's/\"\([^\"][^\"]*\)\", line \([0-9][0-9]*\)/\1:\2/g' 1>&2
 	;;
 *)
 	exec $cc -I$PLAN9/include $cflags "$@"