diff --git a/gst/matroska/matroska-demux.c b/gst/matroska/matroska-demux.c
index 552c251752..023c670c06 100644
--- a/gst/matroska/matroska-demux.c
+++ b/gst/matroska/matroska-demux.c
@@ -5423,7 +5423,8 @@ gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext *
     if (priv) {
       caps = gst_caps_new_simple ("audio/mpeg",
           "mpegversion", G_TYPE_INT, mpegversion,
-          "framed", G_TYPE_BOOLEAN, TRUE, NULL);
+          "framed", G_TYPE_BOOLEAN, TRUE,
+          "stream-format", G_TYPE_STRING, "raw", NULL);
       gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
       *codec_name = g_strdup_printf ("MPEG-%d AAC audio", mpegversion);
       gst_buffer_unref (priv);