diff --git a/src/js/utils/serialization/backward/Deserializer_v0.js b/src/js/utils/serialization/backward/Deserializer_v0.js
index ee16265c..04bf27d6 100644
--- a/src/js/utils/serialization/backward/Deserializer_v0.js
+++ b/src/js/utils/serialization/backward/Deserializer_v0.js
@@ -14,6 +14,6 @@
     var descriptor = new pskl.model.piskel.Descriptor('Deserialized piskel', '');
     var layer = pskl.model.Layer.fromFrames('Layer 1', frames);
 
-    this.callback_(pskl.model.Piskel.fromLayers([layer], Constants.DEFAULTS.FPS, descriptor));
+    this.callback_(pskl.model.Piskel.fromLayers([layer], Constants.DEFAULT.FPS, descriptor));
   };
 })();
diff --git a/src/js/utils/serialization/backward/Deserializer_v1.js b/src/js/utils/serialization/backward/Deserializer_v1.js
index 6d5df3fd..7b71dd4d 100644
--- a/src/js/utils/serialization/backward/Deserializer_v1.js
+++ b/src/js/utils/serialization/backward/Deserializer_v1.js
@@ -9,7 +9,7 @@
   ns.Deserializer_v1.prototype.deserialize = function () {
     var piskelData = this.data_.piskel;
     var descriptor = new pskl.model.piskel.Descriptor('Deserialized piskel', '');
-    var piskel = new pskl.model.Piskel(piskelData.width, piskelData.height, Constants.DEFAULTS.FPS, descriptor);
+    var piskel = new pskl.model.Piskel(piskelData.width, piskelData.height, Constants.DEFAULT.FPS, descriptor);
 
     piskelData.layers.forEach(function (serializedLayer) {
       var layer = this.deserializeLayer(serializedLayer);