diff --git a/cmd/libs/go2idl/conversion-gen/main.go b/cmd/libs/go2idl/conversion-gen/main.go
index 79f515e5ad0..9c040a20313 100644
--- a/cmd/libs/go2idl/conversion-gen/main.go
+++ b/cmd/libs/go2idl/conversion-gen/main.go
@@ -60,6 +60,7 @@ func main() {
 			"k8s.io/kubernetes/pkg/conversion",
 			"k8s.io/kubernetes/pkg/runtime",
 		},
+		SkipUnsafe: true,
 	}
 	pflag.CommandLine.StringSliceVar(&customArgs.ExtraPeerDirs, "extra-peer-dirs", customArgs.ExtraPeerDirs,
 		"Comma-separated list of import paths which are considered, after tag-specified peers, for conversions.")