diff --git a/src/js/components/ImageEditor/ImageTransformationHandler.js b/src/js/components/ImageEditor/ImageTransformationHandler.js
index 5c4f949..b705c44 100644
--- a/src/js/components/ImageEditor/ImageTransformationHandler.js
+++ b/src/js/components/ImageEditor/ImageTransformationHandler.js
@@ -2,7 +2,7 @@
 
 function ImageTransformationHandler(img) {
     var _transformations = {
-        mirrored: false
+        mirrored: 0
     };
 
     /**
@@ -54,7 +54,7 @@ function ImageTransformationHandler(img) {
     this.set = function (name, args) {
         switch (name) {
             case 'mirror':
-                _transformations.mirrored = (img.flipX = args);
+                _transformations.mirrored = (img.flipX = args) ? 1 : 0;
         }
         img.setCoords().canvas.renderAll();