diff --git a/src/test/ui/deprecation/deprecation-sanity.stderr b/src/test/ui/deprecation/deprecation-sanity.stderr
index 7ff68a1038b1..15afa78b140d 100644
--- a/src/test/ui/deprecation/deprecation-sanity.stderr
+++ b/src/test/ui/deprecation/deprecation-sanity.stderr
@@ -54,5 +54,5 @@ LL | #[deprecated(since = "a", since = "b", note = "c")]
 
 error: aborting due to 9 previous errors
 
-Some errors have detailed explanations: E0538, E0541, E0565.
+Some errors have detailed explanations: E0538, E0541, E0550, E0565.
 For more information about an error, try `rustc --explain E0538`.