diff --git a/src/test/ui/compiletest-compile-flags-last.rs b/src/test/ui/compiletest-compile-flags-last.rs
index 9c78e4c5e9d..232df10f1a8 100644
--- a/src/test/ui/compiletest-compile-flags-last.rs
+++ b/src/test/ui/compiletest-compile-flags-last.rs
@@ -4,3 +4,4 @@
 // next flag as the argument of this flag.
 //
 // compile-flags: --cap-lints
+// error-pattern: Argument to option 'cap-lints' missing