diff --git a/test/typeparam/issue48094b.go b/test/typeparam/issue48094b.go
index b83fbd7af16a5..87b4ff46c1ea4 100644
--- a/test/typeparam/issue48094b.go
+++ b/test/typeparam/issue48094b.go
@@ -1,4 +1,4 @@
-// compiledir
+// compiledir -G=3
 
 // Copyright 2021 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style