diff --git a/src/WebApps/Shopping.Web/Pages/Checkout.cshtml b/src/WebApps/Shopping.Web/Pages/Checkout.cshtml
index 68064797..8f04965c 100644
--- a/src/WebApps/Shopping.Web/Pages/Checkout.cshtml
+++ b/src/WebApps/Shopping.Web/Pages/Checkout.cshtml
@@ -130,7 +130,7 @@
                     </div>
                     <div class="col-md-3 mb-3">
                         <label asp-for="Order.ZipCode" for="zip">Zip</label>
-                        <input asp-for="Order.ZipCode" type="text" class="form-control" id="zip" placeholder="" required>
+                        <input asp-for="Order.ZipCode" type="text" class="form-control" id="zip" placeholder="" maxlength="5" required>
                         <div class="invalid-feedback">
                             Zip code required.
                         </div>