diff --git a/tests/python/unittest/test_operator.py b/tests/python/unittest/test_operator.py
index 3c27323ee758..2760aa0f5363 100644
--- a/tests/python/unittest/test_operator.py
+++ b/tests/python/unittest/test_operator.py
@@ -8660,11 +8660,18 @@ def test_get_all_registered_operators():
     ops = get_all_registered_operators()
     ok_(isinstance(ops, list))
     ok_(len(ops) > 0)
+    ok_('Activation' in ops)
 
 
 def test_get_operator_arguments():
-    operator_arguments = get_operator_arguments(mx.operator.get_all_registered_operators()[0])
+    operator_arguments = get_operator_arguments('Activation')
     ok_(isinstance(operator_arguments, OperatorArguments))
+    ok_(operator_arguments.names == ['data', 'act_type'])
+    print(operator_arguments.types)
+    ok_(operator_arguments.types
+        == ['NDArray-or-Symbol', "{'relu', 'sigmoid', 'softrelu', 'softsign', 'tanh'}, required"])
+    ok_(operator_arguments.narg == 2)
+
 
 
 if __name__ == '__main__':