diff --git a/tests/coverage/generic-unused-impl.coverage b/tests/coverage/generic-unused-impl.coverage
index 0c20285f8454..c3a3c7242901 100644
--- a/tests/coverage/generic-unused-impl.coverage
+++ b/tests/coverage/generic-unused-impl.coverage
@@ -1,3 +1,4 @@
+   LL|       |// Regression test for #135235.
    LL|       |trait Foo {
    LL|       |    type Assoc;
    LL|       |