diff --git a/gst-libs/gst/codecparsers/gsth264parser.h b/gst-libs/gst/codecparsers/gsth264parser.h
index f0cd49174f..42cdc11162 100644
--- a/gst-libs/gst/codecparsers/gsth264parser.h
+++ b/gst-libs/gst/codecparsers/gsth264parser.h
@@ -101,6 +101,11 @@ typedef enum {
  * @GST_H264_NAL_SEQ_END: End of sequence nal unit
  * @GST_H264_NAL_STREAM_END: End of stream nal unit
  * @GST_H264_NAL_FILLER_DATA: Filler data nal lunit
+ * @GST_H264_NAL_SPS_EXT: Sequence parameter set (SPS) extension NAL unit
+ * @GST_H264_NAL_PREFIX_UNIT: Prefix NAL unit
+ * @GST_H264_NAL_SUBSET_SPS: Subset sequence parameter set (SPS) NAL unit
+ * @GST_H264_NAL_SLICE_AUX: Auxiliary coded picture without partitioning NAL unit
+ * @GST_H264_NAL_SLICE_EXT: Coded slice extension NAL unit
  *
  * Indicates the type of H264 Nal Units
  */
@@ -118,7 +123,12 @@ typedef enum
   GST_H264_NAL_AU_DELIMITER = 9,
   GST_H264_NAL_SEQ_END      = 10,
   GST_H264_NAL_STREAM_END   = 11,
-  GST_H264_NAL_FILLER_DATA  = 12
+  GST_H264_NAL_FILLER_DATA  = 12,
+  GST_H264_NAL_SPS_EXT      = 13,
+  GST_H264_NAL_PREFIX_UNIT  = 14,
+  GST_H264_NAL_SUBSET_SPS   = 15,
+  GST_H264_NAL_SLICE_AUX    = 19,
+  GST_H264_NAL_SLICE_EXT    = 20
 } GstH264NalUnitType;
 
 /**