diff --git a/cmd/tailscale/cli/ip.go b/cmd/tailscale/cli/ip.go
index 2122d6022..388636a6d 100644
--- a/cmd/tailscale/cli/ip.go
+++ b/cmd/tailscale/cli/ip.go
@@ -46,7 +46,7 @@ func runIP(ctx context.Context, args []string) error {
 
 	v4, v6 := ipArgs.want4, ipArgs.want6
 	if v4 && v6 {
-		return errors.New("tailscale up -4 and -6 are mutually exclusive")
+		return errors.New("tailscale ip -4 and -6 are mutually exclusive")
 	}
 	if !v4 && !v6 {
 		v4, v6 = true, true