diff --git a/sketch2app.sketchplugin/Contents/Sketch/library/core.js b/sketch2app.sketchplugin/Contents/Sketch/library/core.js
index 75c2ebb..0e5e37b 100644
--- a/sketch2app.sketchplugin/Contents/Sketch/library/core.js
+++ b/sketch2app.sketchplugin/Contents/Sketch/library/core.js
@@ -195,14 +195,15 @@ var l4c = {
 
   processSlice: function(slice, document) {
     var frame = [slice frame]
-    var sliceName = [slice name]
+    var objectID = [slice objectID]
+    var sliceName = encodeURIComponent([slice name])
     var baseDir = helpers.getCurrentDirectory(document)
 
     for (var i = 0; i < l4c.defs.factors.length; i++) {
       var scale = l4c.defs.factors[i].scale
       var suffix = l4c.defs.factors[i].suffix
       var version = l4c.makeSliceAndResizeWithFactor(slice, scale)
-      var fileName = baseDir + "/" + l4c.defs.localFolder + "/images/" + sliceName + suffix + ".png"
+      var fileName = baseDir + "/" + l4c.defs.localFolder + "/images/" + sliceName + "-" + objectID + suffix + ".png"
       [document saveArtboardOrSlice: version toFile: fileName]
       log("Saved " + fileName)
     }
diff --git a/sketch2app.sketchplugin/Contents/Sketch/manifest.json b/sketch2app.sketchplugin/Contents/Sketch/manifest.json
index fa07a40..3987b83 100644
--- a/sketch2app.sketchplugin/Contents/Sketch/manifest.json
+++ b/sketch2app.sketchplugin/Contents/Sketch/manifest.json
@@ -1,7 +1,7 @@
 {
   "name": "Sketch2App",
   "description": "A Sketch Plugin to upload mobile design and create native app instantly. Design in Sketch and view result on device in real time.",
-  "version": "0.4.0",
+  "version": "0.4.1",
   "identifier": "instantapp.io.sketch2app",
   "appcast": "https://api.sketchpacks.com/v1/plugins/instantapp.io.sketch2app/appcast",
   "compatibleVersion": 3,