diff --git a/OneSDK.d.ts b/OneSDK.d.ts
index bad98df0aae8f4599574f335a59a502b2f1527a7..d5ada1e508ece2f32954964232b0aeed8ca4755c 100644
--- a/OneSDK.d.ts
+++ b/OneSDK.d.ts
@@ -25,7 +25,7 @@ export declare class OneSDK {
     ready(): Promise<void>;
     setup(op?: Partial<OneSDKConfig>): Promise<void>;
     private _tick;
-    subscribe<T extends Subscriber<SendType>>(subscriber: T): number;
+    subscribe<T extends SendType = SendType>(subscriber: Subscriber<T>): number;
     unsubscribe(subscriberId: number): void;
     reset(): void;
     getStyleVariable<T = any>(name: string, defaultValue: T, parser?: (val: string) => T): T;