diff --git a/tests/ui/match_str_case_mismatch.stderr b/tests/ui/match_str_case_mismatch.stderr
index f799a4698b943..b178fb7512cdb 100644
--- a/tests/ui/match_str_case_mismatch.stderr
+++ b/tests/ui/match_str_case_mismatch.stderr
@@ -17,7 +17,7 @@ error: this `match` arm has a differing case than its expression
 LL |         "~!@#$%^&*()-_=+Foo" => {},
    |         ^^^^^^^^^^^^^^^^^^^^
    |
-help: consider changing the case of this arm to respect `to_ascii_lowercase`
+help: consider changing the case of this arm to respect `to_ascii_lowercase` (notice the capitalization difference)
    |
 LL |         "~!@#$%^&*()-_=+foo" => {},
    |         ~~~~~~~~~~~~~~~~~~~~