diff --git a/src/components/utils/OffchainSigner/SignerKeyringManager.ts b/src/components/utils/OffchainSigner/SignerKeyringManager.ts
index f88d41def..f4de291ab 100644
--- a/src/components/utils/OffchainSigner/SignerKeyringManager.ts
+++ b/src/components/utils/OffchainSigner/SignerKeyringManager.ts
@@ -73,7 +73,7 @@ class SignerKeyringManager {
     return u8aToString(decrypted)
   }
 
-  public generateKeypairBySecret(secret: string) {
+  public generateKeypairBySecret(secret: string): ReturnType<Keyring['addFromUri']> {
     const keypair = this.keyring.addFromUri(secret, {}, 'sr25519')
     return keypair
   }