diff --git a/nzbtomedia/transcoder/transcoder.py b/nzbtomedia/transcoder/transcoder.py
index ff4a69a6..7f883c33 100644
--- a/nzbtomedia/transcoder/transcoder.py
+++ b/nzbtomedia/transcoder/transcoder.py
@@ -559,7 +559,7 @@ def ripISO(item, newDir, bitbucket):
             concat = []
             m = 1
             while True:
-                vtsName = 'VIDEO_TS%sVTS_%02d_%s.VOB' % (os.sep, n+1, str(m))
+                vtsName = 'VIDEO_TS%sVTS_%02d_%d.VOB' % (os.sep, n+1, m)
                 if vtsName in fileList:
                     concat.append(vtsName)
                     m += 1
@@ -584,9 +584,9 @@ def combineVTS(vtsPath):
         concat = ''
         m = 1
         while True:
-            vtsName = 'VTS_%02d_%s.VOB' % (n+1, str(m))
+            vtsName = 'VTS_%02d_%d.VOB' % (n+1, m)
             if os.path.isfile(os.path.join(vtsPath, vtsName)):
-                concat = concat + '%s|' % (os.path.join(vtsPath, vtsName))
+                concat = concat + os.path.join(vtsPath, vtsName) + '|'
                 m += 1
             else:
                 break