diff --git a/gst/isomp4/qtdemux.c b/gst/isomp4/qtdemux.c
index d41fdced52..1c9cdab780 100644
--- a/gst/isomp4/qtdemux.c
+++ b/gst/isomp4/qtdemux.c
@@ -8760,6 +8760,8 @@ qtdemux_tag_add_blob (GNode * node, GstQTDemux * demux)
 
   gst_tag_list_add (demux->tag_list, GST_TAG_MERGE_APPEND,
       GST_QT_DEMUX_PRIVATE_TAG, sample, NULL);
+
+  gst_sample_unref (sample);
 }
 
 static void