diff --git a/deltasigma/tests/test_scaleABCD.py b/deltasigma/tests/test_scaleABCD.py
index a13b185..5a95931 100644
--- a/deltasigma/tests/test_scaleABCD.py
+++ b/deltasigma/tests/test_scaleABCD.py
@@ -86,7 +86,7 @@ def test_scaleABCD(self):
         if not np.allclose(umax, self.umax_ref, atol=1e-4, rtol=1e-3):
             # An error occured on Vanilla Python 3.8
             print("umax = ", umax)
-            print("self.umax_ref = "self.umax_ref)
+            print("self.umax_ref = ", self.umax_ref)
         self.assertTrue(np.allclose(umax, self.umax_ref, atol=1e-4, rtol=1e-3))
         self.assertTrue(np.allclose(np.diag(S), self.Sdiag_ref, atol=1e-2, rtol=25e-1))