diff --git a/tests/call_function_test.py b/tests/call_function_test.py
index f843f806..6dd8d584 100644
--- a/tests/call_function_test.py
+++ b/tests/call_function_test.py
@@ -91,5 +91,5 @@ class CallFunctionTest(unittest.TestCase):
         assert context.name == self.local.name
 
 
-if __name__ = '__main__':
+if __name__ == '__main__':
     unittest.main()