diff --git a/build/phaser.d.ts b/build/phaser.d.ts
index 851f2b8cc..ea07d3f2c 100644
--- a/build/phaser.d.ts
+++ b/build/phaser.d.ts
@@ -1959,7 +1959,7 @@ declare module Phaser {
         createMultiple(quantity: number, key: string, frame?: any, exists?: boolean): Phaser.Sprite;
         destroy(destroyChildren?: boolean, soft?:boolean): void;
         divideAll(property: string, amount: number, checkAlive?: boolean, checkVisible?: boolean): void;
-        forEach(callback: Function, callbackContext: Object, checkExists: boolean): void;
+        forEach(callback: Function, callbackContext: Object, checkExists?: boolean): void;
         forEachAlive(callback: Function, callbackContext: Object): void;
         forEachDead(callback: Function, callbackContext: Object): void;
         forEachExists(callback: Function, callbackContext: Object): void;
diff --git a/src/core/Group.js b/src/core/Group.js
index c77839d1c..5bae30a31 100644
--- a/src/core/Group.js
+++ b/src/core/Group.js
@@ -1021,14 +1021,11 @@ Phaser.Group.prototype.postUpdate = function () {
 * @method Phaser.Group#forEach
 * @param {function} callback - The function that will be called. Each child of the Group will be passed to it as its first parameter.
 * @param {Object} callbackContext - The context in which the function should be called (usually 'this').
-* @param {boolean} checkExists - If set only children with exists=true will be passed to the callback, otherwise all children will be passed.
+* @param {boolean} [checkExists=false] - If set only children with exists=true will be passed to the callback, otherwise all children will be passed.
 */
 Phaser.Group.prototype.forEach = function (callback, callbackContext, checkExists) {
 
-    if (typeof checkExists === 'undefined')
-    {
-        checkExists = false;
-    }
+    if (typeof checkExists === 'undefined') { checkExists = false; }
 
     var args = Array.prototype.splice.call(arguments, 3);
     args.unshift(null);