diff --git a/dapps/react-dapp-v2-cosmos-provider/src/App.tsx b/dapps/react-dapp-v2-cosmos-provider/src/App.tsx
index db1bedb..7233fc4 100644
--- a/dapps/react-dapp-v2-cosmos-provider/src/App.tsx
+++ b/dapps/react-dapp-v2-cosmos-provider/src/App.tsx
@@ -123,6 +123,10 @@ export default function App() {
 
     const address = account.split(":").pop();
 
+    if (!address) {
+      throw new Error(`Could not derive address from account: ${account}`);
+    }
+
     // cosmos_signDirect params
     const params = {
       signerAddress: address,
@@ -161,6 +165,10 @@ export default function App() {
 
     const address = account.split(":").pop();
 
+    if (!address) {
+      throw new Error(`Could not derive address from account: ${account}`);
+    }
+
     // cosmos_signAmino params
     const params = { signerAddress: address, signDoc };