diff --git a/src/libcharon/sa/ikev2/tasks/ike_auth.c b/src/libcharon/sa/ikev2/tasks/ike_auth.c
index 036910d0e9..1e47144dc7 100644
--- a/src/libcharon/sa/ikev2/tasks/ike_auth.c
+++ b/src/libcharon/sa/ikev2/tasks/ike_auth.c
@@ -466,7 +466,8 @@ METHOD(task_t, build_i, status_t,
 		get_reserved_id_bytes(this, id_payload);
 		message->add_payload(message, (payload_t*)id_payload);
 
-		if (idr && message->get_message_id(message) == 1 &&
+		if (idr && !idr->contains_wildcards(idr) &&
+			message->get_message_id(message) == 1 &&
 			this->peer_cfg->get_unique_policy(this->peer_cfg) != UNIQUE_NO &&
 			this->peer_cfg->get_unique_policy(this->peer_cfg) != UNIQUE_NEVER)
 		{