diff --git a/src/test/py/test_read_math_function.py b/src/test/py/test_read_math_function.py
index 5643e38..09e0d83 100644
--- a/src/test/py/test_read_math_function.py
+++ b/src/test/py/test_read_math_function.py
@@ -91,6 +91,9 @@ class ReadFunction(unittest.TestCase):
     def test_simplify_product_function_2_multiplicators(self):
         self.assertEqual(simplify_product_function("p", "x*x"), ["x^2"])
 
+    def test_simplify_product_function_3_multiplicators(self):
+        self.assertEqual(simplify_product_function("p", "x*x*x"), ["x^3"])
+
 
 if __name__ == '__main__':
     unittest.main()