diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 7576ef3..a64077b 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -263,7 +263,7 @@
 };
 
 /* 
- * Constrains the filter area to the texture size
+ * Calculates the mapped matrix 
  * @param filterArea {Rectangle} The filter area 
  * @param sprite {Sprite} the target sprite
  * @param outputMatrix {Matrix} @alvin

diff --git a/src/core/renderers/webgl/managers/FilterManager.js b/src/core/renderers/webgl/managers/FilterManager.js
index 7576ef3..a64077b 100644
--- a/src/core/renderers/webgl/managers/FilterManager.js
+++ b/src/core/renderers/webgl/managers/FilterManager.js
@@ -263,7 +263,7 @@
 };
 
 /* 
- * Constrains the filter area to the texture size
+ * Calculates the mapped matrix 
  * @param filterArea {Rectangle} The filter area 
  * @param sprite {Sprite} the target sprite
  * @param outputMatrix {Matrix} @alvin
diff --git a/src/interaction/InteractionManager.js b/src/interaction/InteractionManager.js
index b60face..936909b 100644
--- a/src/interaction/InteractionManager.js
+++ b/src/interaction/InteractionManager.js
@@ -617,8 +617,8 @@
 
 
 /**
- * [onTouchEnd description]
- * @param event {type} [description]
+ * Is called when a touch ends on the renderer element
+ * @param event {Event} The DOM event of a touch ending on the renderer view
  *
  */
 InteractionManager.prototype.onTouchEnd = function (event)
@@ -726,7 +726,7 @@
 /**
  * Grabs an interaction data object from the internal pool
  * 
- * @param touchEvent {Event @alvin} The touch event we need to pair with a touchData object
+ * @param touchEvent {EventData} The touch event we need to pair with an interactionData object
  *
  * @private
  */