diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index a9b2727..da2447a 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1118,8 +1118,7 @@
 
 	/* reset session timer */
 	if (reset_agg_timer && tid_tx->timeout)
-		mod_timer(&tid_tx->session_timer,
-			  TU_TO_EXP_TIME(tid_tx->timeout));
+		tid_tx->last_tx = jiffies;
 
 	return queued;
 }