diff --git a/01_frontend/src/index.js b/01_frontend/src/index.js
index 3501975..14cf6c9 100644
--- a/01_frontend/src/index.js
+++ b/01_frontend/src/index.js
@@ -13,7 +13,7 @@ function createSiweMessage(address, statement) {
         statement,
         uri: origin,
         version: '1',
-        chainId: '1'
+        chainId: 1
     });
     return message.prepareMessage();
 }