diff --git a/src/cmd/compile/internal/types2/stdlib_test.go b/src/cmd/compile/internal/types2/stdlib_test.go
index 5bf2982418..6e340d0777 100644
--- a/src/cmd/compile/internal/types2/stdlib_test.go
+++ b/src/cmd/compile/internal/types2/stdlib_test.go
@@ -217,7 +217,7 @@ func typecheck(t *testing.T, path string, filenames []string) {
 	var files []*syntax.File
 	for _, filename := range filenames {
 		errh := func(err error) { t.Error(err) }
-		file, err := syntax.ParseFile(filename, errh, nil, 0)
+		file, err := syntax.ParseFile(filename, errh, nil, syntax.AllowGenerics)
 		if err != nil {
 			return
 		}