diff --git a/Lib/unittest/case.py b/Lib/unittest/case.py
index f33486543fe..2e5cb044c15 100644
--- a/Lib/unittest/case.py
+++ b/Lib/unittest/case.py
@@ -642,7 +642,7 @@ def assertEqual(self, first, second, msg=None):
         assertion_func(first, second, msg=msg)
 
     def assertNotEqual(self, first, second, msg=None):
-        """Fail if the two objects are equal as determined by the '=='
+        """Fail if the two objects are equal as determined by the '!='
            operator.
         """
         if not first != second: