diff --git a/tests/aggregate_tests.py b/tests/aggregate_tests.py
index 1279b841..a77fc2b9 100755
--- a/tests/aggregate_tests.py
+++ b/tests/aggregate_tests.py
@@ -59,6 +59,7 @@
 
 if __name__ == '__main__':
   suite = unittest.TestLoader().loadTestsFromNames(tests_without_extension)
+  print('calling sys.exit(0) after loading tests')
   all_tests_passed = unittest.TextTestRunner(verbosity=1).run(suite).wasSuccessful()
   if not all_tests_passed:
     print('calling sys.exit(1)')