diff --git a/solventmapcreator/test/polynomialanalysistest/polynomialcomparisontest.py b/solventmapcreator/test/polynomialanalysistest/polynomialcomparisontest.py
index 78c3f22f7eb293fbcfc8e0e02f73215628515078..642573f6fa2fe67f0877f91b30caba2b220dca58 100644
--- a/solventmapcreator/test/polynomialanalysistest/polynomialcomparisontest.py
+++ b/solventmapcreator/test/polynomialanalysistest/polynomialcomparisontest.py
@@ -189,3 +189,6 @@ class PolynomialComparisonTestCase(unittest.TestCase):
         poly_coefficients = self.poly_data_by_solvent_id["poly_fit"][2]["coefficients"]
         actual_values = polynomialcomparison.calculate_polynomial_values(self.x_values, poly_coefficients)
         np.testing.assert_array_almost_equal(expected_values, actual_values)
+        poly_coeffs_split = polynomialcomparison.get_polynomial_coefficients(self.poly_data2["poly_fit"], 2)
+        actual_values2 = polynomialcomparison.calculate_polynomial_values(self.x_values, poly_coeffs_split)
+        np.testing.assert_array_almost_equal(expected_values, actual_values2)