diff --git a/src/physics/matter-js/World.js b/src/physics/matter-js/World.js
index b1cd2d87f..f00bcdfc0 100644
--- a/src/physics/matter-js/World.js
+++ b/src/physics/matter-js/World.js
@@ -1191,7 +1191,7 @@ var World = new Class({
      * @param {number} time - The current time. Either a High Resolution Timer value if it comes from Request Animation Frame, or Date.now if using SetTimeout.
      * @param {number} delta - The delta time in ms since the last frame. This is a smoothed and capped value based on the FPS rate.
      */
-    update: function (time, delta)
+    update: function (time)
     {
         if (!this.enabled || !this.autoUpdate)
         {