diff --git a/bin/git-bulk b/bin/git-bulk
index e3bdd66..48c1954 100755
--- a/bin/git-bulk
+++ b/bin/git-bulk
@@ -129,7 +129,7 @@ function wsnameToCurrent () {
 
 # helper to check number of arguments.
 function allowedargcount () {
-	if [ "$paramcount" -ne "$1"  ] && [ "$paramcount" -ne "$2" ]; then
+	if [ "$paramcount" -ne "${1:-0}"  ] && [ "$paramcount" -ne "${2:-0}" ]; then
 		echo 1>&2 "error: wrong number of arguments" && usage;
 		exit 1;
 	fi