diff --git a/include/re_sipevent.h b/include/re_sipevent.h
index 1d7da58..0fb0528 100644
--- a/include/re_sipevent.h
+++ b/include/re_sipevent.h
@@ -32,6 +32,7 @@ struct sipevent_substate {
 	enum sipevent_subst state;
 	enum sipevent_reason reason;
 	struct pl expires;
+	struct pl retry_after;
 	struct pl params;
 };
 
diff --git a/src/sipevent/msg.c b/src/sipevent/msg.c
index b96d53e..9b61137 100644
--- a/src/sipevent/msg.c
+++ b/src/sipevent/msg.c
@@ -57,11 +57,6 @@ int sipevent_substate_decode(struct sipevent_substate *ss, const struct pl *pl)
 	else
 		ss->state = -1;
 
-	if (!sip_param_decode(&ss->params, "expires", &param))
-		ss->expires = param;
-	else
-		ss->expires = pl_null;
-
 	if (!sip_param_decode(&ss->params, "reason", &param)) {
 
 		if (!pl_strcasecmp(&param, "deactivated"))
@@ -83,6 +78,16 @@ int sipevent_substate_decode(struct sipevent_substate *ss, const struct pl *pl)
 		ss->reason = -1;
 	}
 
+	if (!sip_param_decode(&ss->params, "expires", &param))
+		ss->expires = param;
+	else
+		ss->expires = pl_null;
+
+	if (!sip_param_decode(&ss->params, "retry-after", &param))
+		ss->retry_after = param;
+	else
+		ss->retry_after = pl_null;
+
 	return 0;
 }