diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 2b07d4b..bc9da939 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -290,6 +290,7 @@
 {
 	struct mac80211_hwsim_data *data = hw->priv;
 	data->started = 0;
+	del_timer(&data->beacon_timer);
 	printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__);
 }