diff --git a/linux-live/minioslib b/linux-live/minioslib
index 71a5eb4..ec87f09 100644
--- a/linux-live/minioslib
+++ b/linux-live/minioslib
@@ -17,7 +17,7 @@ function common_variables() {
 
 	#
 	set +u
-	if [ ! -z $container ]; then
+	if [ -z $container ]; then
 		container = ""
 	fi
 	set -u