Closes #3012
@ -275,7 +275,7 @@ namespace NzbDrone.Core.Books.Calibre
var updatedPath = GetOriginalFormat(updated.Formats);
if (updatedPath != file.Path)
if (updatedPath != null && updatedPath != file.Path)
{
_rootFolderWatchingService.ReportFileSystemChangeBeginning(updatedPath);
file.Path = updatedPath;