diff --git a/testing/test_assertion.py b/testing/test_assertion.py
index c8d6a9078..1fc65a80a 100644
--- a/testing/test_assertion.py
+++ b/testing/test_assertion.py
@@ -778,13 +778,13 @@ class TestAssert_reprcompare:
 
     def test_nfc_nfd_same_string(self) -> None:
         # issue 3426
-        left = 'hyv\xe4'
-        right = 'hyva\u0308'
+        left = "hyv\xe4"
+        right = "hyva\u0308"
         expl = callequal(left, right)
         assert expl == [
             "'hyvä' == 'hyvä'",
-            'Strings are different but normalize to the same string. Comparing their utf-8 encoding.',
-            "At index 3 diff: b'\\xc3' != b'a'"
+            "Strings are different but normalize to the same string. Comparing their utf-8 encoding.",
+            "At index 3 diff: b'\\xc3' != b'a'",
         ]