diff --git a/ChangeLog b/ChangeLog
index 007c6a719a..ff459927a1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-01-05  Zaheer Abbas Merali  <zaheerabbas at merali dot org>
+
+	* gst/mpegdemux/mpegtspacketizer.c:
+	Guard interval is 4 if descriptor part shows binary 11 (3 not 4).
+
 2009-01-05  Zaheer Abbas Merali  <zaheerabbas at merali dot org>
 
 	* gst/mpegdemux/gstmpegdesc.h:
diff --git a/gst/mpegdemux/mpegtspacketizer.c b/gst/mpegdemux/mpegtspacketizer.c
index ea093c439a..507271d862 100644
--- a/gst/mpegdemux/mpegtspacketizer.c
+++ b/gst/mpegdemux/mpegtspacketizer.c
@@ -888,7 +888,7 @@ mpegts_packetizer_parse_nit (MpegTSPacketizer * packetizer,
           default:
             code_rate_lp_str = "reserved";
         }
-        /* guard is 32 if 0, 16 if 1, 8 if 2, 4 if 4 */
+        /* guard is 32 if 0, 16 if 1, 8 if 2, 4 if 3 */
         switch (guard_interval) {
           case 0:
             guard_interval = 32;
@@ -899,7 +899,7 @@ mpegts_packetizer_parse_nit (MpegTSPacketizer * packetizer,
           case 2:
             guard_interval = 8;
             break;
-          case 4:
+          case 3:
             guard_interval = 4;
             break;
           default:             /* make it default to 32 */