diff --git a/gst/mpegtsdemux/mpegtspacketizer.c b/gst/mpegtsdemux/mpegtspacketizer.c
index ddafdb65b1..d28bda5db4 100644
--- a/gst/mpegtsdemux/mpegtspacketizer.c
+++ b/gst/mpegtsdemux/mpegtspacketizer.c
@@ -743,6 +743,8 @@ mpegts_packetizer_parse_descriptors (MpegTSPacketizer2 * packetizer,
     g_value_take_boxed (value, desc);
   }
 
+  descriptors->n_values = nb_desc;
+
   *buffer = data;
 
   return descriptors;