diff --git a/src/hooks/useDiscoverProvider.ts b/src/hooks/useDiscoverProvider.ts
index 7aceb3df..c66a49b9 100644
--- a/src/hooks/useDiscoverProvider.ts
+++ b/src/hooks/useDiscoverProvider.ts
@@ -36,6 +36,7 @@ export default function useDiscoverProvider() {
         signature.s.toString(16, 64),
         `0${signature.recoveryParam.toString()}`,
       ].join('');
+      signature.recoveryParam = Number(signature.recoveryParam);
 
       // recover pubkey by signature
       let publicKey;