diff --git a/tests/ui/specialization/source-impl-requires-constraining-predicates-ambig.rs b/tests/ui/specialization/source-impl-requires-constraining-predicates-ambig.rs
index 977493c885b..2296cd8a937 100644
--- a/tests/ui/specialization/source-impl-requires-constraining-predicates-ambig.rs
+++ b/tests/ui/specialization/source-impl-requires-constraining-predicates-ambig.rs
@@ -2,7 +2,7 @@
 //@ ignore-compare-mode-next-solver (explicit revisions)
 //@[next] compile-flags: -Znext-solver
 //@[next] check-pass
-//@[current] known-bug: unknown
+//@[current] known-bug: #132519
 //@[current] failure-status: 101
 //@[current] dont-check-compiler-stderr