diff --git a/web/public/index.html b/web/public/index.html
index aa069f27..f66871aa 100644
--- a/web/public/index.html
+++ b/web/public/index.html
@@ -24,7 +24,7 @@
work correctly both with client-side routing and a non-root public URL.
Learn how to configure a non-root public URL by running `npm run build`.
-->
- React App
+ Wormhole Demonstration UI
diff --git a/web/src/components/TransferProposals.tsx b/web/src/components/TransferProposals.tsx
index 97ac3cbc..2d4addbe 100644
--- a/web/src/components/TransferProposals.tsx
+++ b/web/src/components/TransferProposals.tsx
@@ -13,6 +13,11 @@ import {PublicKey, Transaction} from "@solana/web3.js";
import KeyContext from "../providers/KeyContext";
import ClientContext from "../providers/ClientContext";
+// @ts-ignore
+if (window.ethereum === undefined) {
+ alert("Please install the MetaMask extension before using this experimental demo web UI");
+}
+
// @ts-ignore
window.ethereum.enable();
// @ts-ignore
diff --git a/web/src/pages/Assistant.tsx b/web/src/pages/Assistant.tsx
index 426c7df4..240a9765 100644
--- a/web/src/pages/Assistant.tsx
+++ b/web/src/pages/Assistant.tsx
@@ -16,6 +16,10 @@ import * as spl from "@solana/spl-token";
import BN from "bn.js"
import {SlotContext} from "../providers/SlotContext";
+// @ts-ignore
+if (window.ethereum === undefined) {
+ alert("Please install the MetaMask extension before using this experimental demo web UI");
+}
const {Step} = Steps;
diff --git a/web/src/pages/Transfer.tsx b/web/src/pages/Transfer.tsx
index c591e942..b3f99691 100644
--- a/web/src/pages/Transfer.tsx
+++ b/web/src/pages/Transfer.tsx
@@ -17,6 +17,10 @@ import {FormInstance} from "antd/lib/form";
import SplBalances from "../components/SplBalances";
import TransferProposals from "../components/TransferProposals";
+// @ts-ignore
+if (window.ethereum === undefined) {
+ alert("Please install the MetaMask extension before using this experimental demo web UI");
+}
// @ts-ignore
window.ethereum.enable();