1 files changed, 1 insertions, 1 deletions
diff --git a/lock.sh b/lock.sh
index 22191fe..9a9cdd6 100755
--- a/lock.sh
+++ b/lock.sh
@@ -11,7 +11,7 @@ lock() {
 		echo "lock $1 found, waiting for unlock" >&2
 		while true; do
 			sleep 2;
-			if [[ ! -d "$1" ]]; then
+			if mkdir "$1" &>/dev/null; then
 				return
 			fi
 		done