diff --git a/tests/functional/flakes/common.sh b/tests/functional/flakes/common.sh
index 8ec70d703..e43e180e3 100644
--- a/tests/functional/flakes/common.sh
+++ b/tests/functional/flakes/common.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+# shellcheck shell=bash
 
 source ../common.sh