diff --git a/net/bridge/br_stp.c b/net/bridge/br_stp.c
index e7ab74b405a145236762cf3a78dc49d48e5b1e1d..b4b6dab9c2859730d3ba9b5bc17f8302ddca6510 100644
--- a/net/bridge/br_stp.c
+++ b/net/bridge/br_stp.c
@@ -463,6 +463,10 @@ void br_port_state_selection(struct net_bridge *br)
 
 		if (p->state != BR_STATE_BLOCKING)
 			br_multicast_enable_port(p);
+		/* Multicast is not disabled for the port when it goes in
+		 * blocking state because the timers will expire and stop by
+		 * themselves without sending more queries.
+		 */
 		if (p->state == BR_STATE_FORWARDING)
 			++liveports;
 	}