diff --git a/mplayer.c b/mplayer.c
index df6c44fe34..113946d388 100644
--- a/mplayer.c
+++ b/mplayer.c
@@ -3011,11 +3011,13 @@ inited_flags|=INITED_DEMUXER;
 
 if (mpctx->stream->type != STREAMTYPE_DVD && mpctx->stream->type != STREAMTYPE_DVDNAV) {
   int i;
+  int maxid = -1;
   // setup global sub numbering
   mpctx->global_sub_indices[SUB_SOURCE_DEMUX] = mpctx->global_sub_size; // the global # of the first demux-specific sub.
   for (i = 0; i < MAX_S_STREAMS; i++)
     if (mpctx->demuxer->s_streams[i])
-      mpctx->global_sub_size++;
+      maxid = FFMAX(maxid, ((sh_sub_t *)mpctx->demuxer->s_streams[i])->sid);
+  mpctx->global_sub_size += maxid + 1;
 }
 if (mpctx->global_sub_size <= dvdsub_id) mpctx->global_sub_size = dvdsub_id + 1;