diff --git a/tools/dvd2concat b/tools/dvd2concat
index 8effee86b9..0280838a6b 100755
--- a/tools/dvd2concat
+++ b/tools/dvd2concat
@@ -37,7 +37,8 @@ normally contains a directory named B<VIDEO_TS>. It must not be encrypted
 with CSS.
 
 I<file.concat> is the output file. It can be used as an input to ffmpeg.
-It will require the B<-safe 0> option.
+It will require the B<-safe 0> and
+B<-protocol_whitelist file,subfile,concat> options.
 
 =cut