diff --git a/tests/unit/config/test_config.py b/tests/unit/config/test_config.py
index 4e4816e7c..a726b0506 100644
--- a/tests/unit/config/test_config.py
+++ b/tests/unit/config/test_config.py
@@ -697,7 +697,7 @@ class TestConfig:
                         assert obj == new
 
         if mutable:
-            assert conf._mutables == [(option, old, new)]
+            assert conf._mutables == ( old, new)
 
         if mutable and mutated:
             # Now let's update