diff --git a/tests/codegen/array-repeat.rs b/tests/codegen/array-repeat.rs
index d4cdb054ad8..b6f3b2e83d3 100644
--- a/tests/codegen/array-repeat.rs
+++ b/tests/codegen/array-repeat.rs
@@ -1,4 +1,4 @@
-// compile-flags: -O
+//@ compile-flags: -O
 
 #![crate_type = "lib"]
 #![feature(array_repeat)]