diff --git a/dockcheck_function.sh b/dockcheck_function.sh
index 835d3f9..1b9f4c0 100644
--- a/dockcheck_function.sh
+++ b/dockcheck_function.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 ### Requires the regctl binary, either in PATH or as an alias
 ### Get it here: https://github.com/regclient/regclient/releases