diff --git a/pjsip/include/pjsip-ua/sip_inv.h b/pjsip/include/pjsip-ua/sip_inv.h
index c85795a..cdc8b8f 100644
--- a/pjsip/include/pjsip-ua/sip_inv.h
+++ b/pjsip/include/pjsip-ua/sip_inv.h
@@ -166,10 +166,11 @@
  */
 struct pjsip_inv_session
 {
-    char		 obj_name[PJ_MAX_OBJ_NAME]; /**< Log identification. */
+    char		 obj_name[PJ_MAX_OBJ_NAME]; /**< Log identification */
     pj_pool_t		*pool;			    /**< Dialog's pool.	    */
     pjsip_inv_state	 state;			    /**< Invite sess state. */
     pjsip_status_code	 cause;			    /**< Disconnect cause.  */
+    pj_str_t		 cause_text;		    /**< Cause text.	    */
     pj_bool_t		 notify;		    /**< Internal.	    */
     pjsip_dialog	*dlg;			    /**< Underlying dialog. */
     pjsip_role_e	 role;			    /**< Invite role.	    */