--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -43,6 +43,7 @@
         self.next_client_id = 0
         self.env = {
             'DISPLAY': display,
+            'PATH': os.environ['PATH']
         }
         self.env = extend_env_with_whitelist(self.env)
         self.hlwm_process = hlwm_process