diff --git a/README.md b/README.md
index 217cc43..1d16921 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ import { validatedAction } from "./action";
 import { useZact } from "zact/client";
 
 export const zactTestComponent = () => {
-  const { mutate, data, isRunning } = useZact(validatedAction);
+  const { mutate, data, isRunning, error } = useZact(validatedAction);
 
   return (
     <div>
@@ -35,6 +35,7 @@ export const zactTestComponent = () => {
         Run server action
       </button>
       {isRunning && <div>Loading...</div>}
+      {error?.message}
       {data?.message}
     </div>
   );