diff --git a/epan/dissectors/packet-pres.c b/epan/dissectors/packet-pres.c
index 132fda2ee2..8cf3721dd8 100644
--- a/epan/dissectors/packet-pres.c
+++ b/epan/dissectors/packet-pres.c
@@ -722,6 +722,9 @@ new_item_len+(asn->offset-*offset)+1,
 				{
 				acse	=	get_integer_value(asn,new_item_len,offset);
 				print_value(asn,pres_tree_ms,tvb,offset,new_item_len);
+				if(session){
+					session->pres_ctx_id=acse;
+				}
 				}
 					break;
 			case OCTET_ALIGNED:
diff --git a/epan/dissectors/packet-ses.h b/epan/dissectors/packet-ses.h
index 7a8830fd6f..200cb72a13 100644
--- a/epan/dissectors/packet-ses.h
+++ b/epan/dissectors/packet-ses.h
@@ -194,5 +194,6 @@ struct SESSION_DATA_STRUCTURE
 {
 	guint8  spdu_type;
 	guint8  abort_type;
+	guint8  pres_ctx_id;
 };
 #define		implementation_restriction		0x10