--- a/tests/test-diff-unified.t	Fri Nov 19 09:17:30 2021 -0800
+++ b/tests/test-diff-unified.t	Fri Nov 19 15:38:36 2021 -0800
@@ -46,7 +46,7 @@
 
   $ hg diff --nodates -U foo
   abort: diff context lines count must be an integer, not 'foo'
-  [255]
+  [10]
 
 
   $ hg diff --nodates -U 2
@@ -87,7 +87,7 @@
 
   $ hg --config diff.unified=foo diff --nodates
   abort: diff context lines count must be an integer, not 'foo'
-  [255]
+  [10]
 
 noprefix config and option