diff --git a/Shorewall-common/shorewall b/Shorewall-common/shorewall
index 50aea7684..8032a5786 100755
--- a/Shorewall-common/shorewall
+++ b/Shorewall-common/shorewall
@@ -405,7 +405,7 @@ start_command() {
 	0)
 	    ;;
 	1)
-	    [ -n "$SHOREWALL_DIR" ] && usage 2
+	    [ -n "$SHOREWALL_DIR" -o -n "$FAST" ] && usage 2
 
 	    if [ ! -d $1 ]; then
 		if [ -e $1 ]; then