diff --git a/scripts/image_signing/ensure_no_password.sh b/scripts/image_signing/ensure_no_password.sh
index 5bda0a7b53..a6adb858f1 100755
--- a/scripts/image_signing/ensure_no_password.sh
+++ b/scripts/image_signing/ensure_no_password.sh
@@ -19,7 +19,7 @@ IMAGE=$1
 ROOTFS=$(make_temp_dir)
 mount_image_partition_ro "$IMAGE" 3 "$ROOTFS"
 
-if ! no_chronos_password $rootfs; then
+if ! no_chronos_password $ROOTFS; then
     echo "chronos password is set! Shouldn't be for release builds."
     exit 1
 fi