diff --git a/src/dns.c b/src/dns.c
index 4ceda4d..57bec21 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -2030,7 +2030,7 @@
 			/* let's try again later from this session. We add ourselves into
 			 * this session's users so that it can remove us upon termination.
 			 */
-			si->flags |= SI_FL_RXBLK_ROOM;
+			si_rx_room_blk(si);
 			return 0;
 		}
 		/* fall through */