diff --git a/renderer/lib/torrent-player.js b/renderer/lib/torrent-player.js
index d9a5a75e..5713e712 100644
--- a/renderer/lib/torrent-player.js
+++ b/renderer/lib/torrent-player.js
@@ -15,12 +15,12 @@ function isPlayable (file) {
 }
 
 function isVideo (file) {
-  var ext = path.extname(file.name)
+  var ext = path.extname(file.name).toLowerCase()
   return ['.mp4', '.m4v', '.webm', '.mov', '.mkv'].indexOf(ext) !== -1
 }
 
 function isAudio (file) {
-  var ext = path.extname(file.name)
+  var ext = path.extname(file.name).toLowerCase()
   return ['.mp3', '.aac', '.ogg', '.wav'].indexOf(ext) !== -1
 }