diff --git a/src/textures/parsers/JSONHash.js b/src/textures/parsers/JSONHash.js
index bb201531f..32c9d44bc 100644
--- a/src/textures/parsers/JSONHash.js
+++ b/src/textures/parsers/JSONHash.js
@@ -41,6 +41,11 @@ var JSONHash = function (texture, sourceIndex, json)
 
     for (var key in frames)
     {
+        if (!frames.hasOwnProperty(key))
+        {
+            continue;
+        }
+
         var src = frames[key];
 
         //  The frame values are the exact coordinates to cut the frame out of the atlas from