diff --git a/src/cmd/cgo/ast_go1.go b/src/cmd/cgo/ast_go1.go
index cf6d99f64a0..f52bf00d7cb 100644
--- a/src/cmd/cgo/ast_go1.go
+++ b/src/cmd/cgo/ast_go1.go
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build !go1.18
-// +build !go1.18
+//go:build compiler_bootstrap
+// +build compiler_bootstrap
 
 package main
 
diff --git a/src/cmd/cgo/ast_go118.go b/src/cmd/cgo/ast_go118.go
index 2e3ce275212..db0108ed726 100644
--- a/src/cmd/cgo/ast_go118.go
+++ b/src/cmd/cgo/ast_go118.go
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build go1.18
-// +build go1.18
+//go:build !compiler_bootstrap
+// +build !compiler_bootstrap
 
 package main