diff --git a/backup-image/list.sh b/backup-image/list.sh
index 78bb057..ca8c434 100755
--- a/backup-image/list.sh
+++ b/backup-image/list.sh
@@ -1,5 +1,5 @@
 #/bin/bash
-if [ $# -eq 0 ]; then
+if [[ "$1" != '$' ]]; then
     echo "Usage: list.sh [Storage disk root path]";
     exit 2;
 fi
diff --git a/backup-image/verify-all.sh b/backup-image/verify-all.sh
index 8c4df7d..0a44928 100755
--- a/backup-image/verify-all.sh
+++ b/backup-image/verify-all.sh
@@ -1,6 +1,6 @@
 #/bin/bash
 echo "Verify All Backups!";
-if [ $# -eq 0 ]; then
+if [[ "$1" != '$' ]]; then
     echo "Usage: verify-all.sh [Storage disk root path]";
     exit 2;
 fi