diff --git a/ortools/init/python/pywrapinit_test.py b/ortools/init/python/pywrapinit_test.py
index 73be618d6f..977ae99c1f 100755
--- a/ortools/init/python/pywrapinit_test.py
+++ b/ortools/init/python/pywrapinit_test.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # Copyright 2010-2022 Google LLC
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.