diff --git a/ql/ql/test/queries/style/DeadCode/Foo.qll b/ql/ql/test/queries/style/DeadCode/Foo.qll
index 5b13fd99ca9..a5b5b08e2a4 100644
--- a/ql/ql/test/queries/style/DeadCode/Foo.qll
+++ b/ql/ql/test/queries/style/DeadCode/Foo.qll
@@ -66,3 +66,6 @@ private class CImpl1 extends AstNode { }
 final class CPublic1 = CImpl1;
 
 private class CImpl2 extends AstNode { }
+
+overlay[discard_entity]
+private predicate discard(@foo x) { any() }