diff --git a/package.json b/package.json
index 4ae7070..259eec4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "SpeedyLoader",
-  "version": "1.4.0",
+  "version": "1.4.1",
   "description": "Speeduino universal firmware loader",
   "main": "main.js",
   "scripts": {
diff --git a/renderer.js b/renderer.js
index 29c6189..0c21389 100644
--- a/renderer.js
+++ b/renderer.js
@@ -238,7 +238,9 @@ function downloadHex(isTeensy)
     var DLurl;
     if(isTeensy)
     { 
-      DLurl = "http://speeduino.com/fw/teensy35/" + e.options[e.selectedIndex].value + ".hex";
+      if(e.options[e.selectedIndex].value == 'master') { DLurl = "http://speeduino.com/fw/teensy35/" + e.options[e.selectedIndex].value + ".hex"; }
+      else { DLurl = "http://speeduino.com/fw/teensy35/" + e.options[e.selectedIndex].value + "-teensy35.hex"; }
+      
       console.log("Downloading Teensy 35 firmware: " + DLurl);
     }
     else