diff --git a/packages/base/src/core/IWeb3Auth.ts b/packages/base/src/core/IWeb3Auth.ts
index b550c21df..3a45d4597 100644
--- a/packages/base/src/core/IWeb3Auth.ts
+++ b/packages/base/src/core/IWeb3Auth.ts
@@ -81,5 +81,5 @@ export interface Web3AuthNoModalOptions {
   /**
    * Private key provider for your chain namespace
    */
-  privateKeyProvider?: IBaseProvider<string>;
+  privateKeyProvider: IBaseProvider<string>;
 }