diff --git a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
index e4ec7a4e36..2852fbc35c 100644
--- a/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
+++ b/MediaBrowser.Controller/MediaEncoding/EncodingHelper.cs
@@ -1189,8 +1189,7 @@ namespace MediaBrowser.Controller.MediaEncoding
             {
                 var tmpConcatPath = Path.Join(_configurationManager.GetTranscodePath(), state.MediaSource.Id + ".concat");
                 _mediaEncoder.GenerateConcatConfig(state.MediaSource, tmpConcatPath);
-                arg.Append(" -f concat -safe 0 -i ")
-                    .Append(tmpConcatPath);
+                arg.Append(CultureInfo.InvariantCulture, $" -f concat -safe 0 -i \"{tmpConcatPath}\"");
             }
             else
             {