diff --git a/tester.py b/tester.py
index 627a4590bf260342b6d2df995cb4b8939dc399f2..650abef8da85a492263e71e54a02cd48f1765917 100755
--- a/tester.py
+++ b/tester.py
@@ -123,7 +123,7 @@ class Tester():
         if '-n' not in args:
             tester_path = os.path.join(root_dir, os.path.basename(__file__))
             mtime = os.path.getmtime(tester_path)
-            subprocess.call(['python3', 'update_envsetup.py'], stderr=subprocess.STDOUT)
+            subprocess.call(['python3', 'update_envsetup.py'])
             if mtime != os.path.getmtime(tester_path):
                 log('The script has changed, restarting it...')
                 os.execl('/bin/python3', 'python3', tester_path, '-n', *args)