diff --git a/gst/matroska/matroska-demux.c b/gst/matroska/matroska-demux.c
index f75b98b366..611463c100 100644
--- a/gst/matroska/matroska-demux.c
+++ b/gst/matroska/matroska-demux.c
@@ -5320,6 +5320,8 @@ gst_matroska_demux_parse_id (GstMatroskaDemux * demux, guint32 id,
                 GST_DEBUG_OBJECT (demux,
                     "estimated duration as %" GST_TIME_FORMAT,
                     GST_TIME_ARGS (demux->common.segment.duration));
+
+                g_free (last);
               }
             }