diff --git a/packages/web3-core-helpers/types/index.d.ts b/packages/web3-core-helpers/types/index.d.ts
index cb297c2ee9b..9fb58c6ea95 100644
--- a/packages/web3-core-helpers/types/index.d.ts
+++ b/packages/web3-core-helpers/types/index.d.ts
@@ -97,7 +97,7 @@ export class WebsocketProviderBase {
 
     reset(): void;
 
-    disconnect(code: number, reason: string): void;
+    disconnect(code?: number, reason?: string): void;
 }
 
 export class IpcProviderBase {