diff --git a/types/stompjs/index.d.ts b/types/stompjs/index.d.ts
index 4c591367dc..ced22109d3 100644
--- a/types/stompjs/index.d.ts
+++ b/types/stompjs/index.d.ts
@@ -26,9 +26,9 @@ export class Client {
 
     debug(...args: string[]): any;
 
-    connect(headers: { login: string, passcode: string, host?: string }, connectCallback: (frame?: Frame) => any, errorCallback?: (error: string) => any): any;
-    connect(headers: { }, connectCallback: (frame?: Frame) => any, errorCallback?: (error: string) => any): any;
-    connect(login: string, passcode: string, connectCallback: (frame?: Frame) => any, errorCallback?: (error: string) => any, host?: string): any;
+    connect(headers: { login: string, passcode: string, host?: string }, connectCallback: (frame?: Frame) => any, errorCallback?: (error: Frame | string) => any): any;
+    connect(headers: { }, connectCallback: (frame?: Frame) => any, errorCallback?: (error: Frame | string) => any): any;
+    connect(login: string, passcode: string, connectCallback: (frame?: Frame) => any, errorCallback?: (error: Frame | string) => any, host?: string): any;
     disconnect(disconnectCallback: () => any, headers?: {}): any;
 
     send(destination: string, headers?: {}, body?: string): any;