diff --git a/share/openPMD/json_schema/check.py b/share/openPMD/json_schema/check.py
index 9fa197afe8..ffa08cd99e 100755
--- a/share/openPMD/json_schema/check.py
+++ b/share/openPMD/json_schema/check.py
@@ -1,3 +1,5 @@
+#!/usr/bin/env python
+
 import json
 import os
 from pathlib import Path