diff --git a/jquery-mockjax/jquery-mockjax-tests.ts b/jquery-mockjax/jquery-mockjax-tests.ts
index 55e77cd2bb..36ebd7e64c 100644
--- a/jquery-mockjax/jquery-mockjax-tests.ts
+++ b/jquery-mockjax/jquery-mockjax-tests.ts
@@ -171,10 +171,10 @@ class Tests {
 
             let settings: MockJaxSettings = {
                 url: '/async-response-callback',
-                response: (settings, callback) => {
+                response: (settings, completed) => {
                     setTimeout(() => {
                         settings.responseText = settings.data.response + ' 3';
-                        callback();
+                        completed();
                     }, 10);
                 }
             };
diff --git a/jquery-mockjax/jquery-mockjax.d.ts b/jquery-mockjax/jquery-mockjax.d.ts
index 8a7c64d815..c054f33317 100644
--- a/jquery-mockjax/jquery-mockjax.d.ts
+++ b/jquery-mockjax/jquery-mockjax.d.ts
@@ -22,7 +22,7 @@ interface MockJaxSettings {
     isTimeout?: boolean;
     dataType?: string;
     contentType?: string;
-    response?: (settings: any, callback?: Function) => void;
+    response?: (settings: any, done?: Function) => void;
     responseText?: string | Object;
     responseXml?: string;
     proxy?: string;