diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 4c210c2debc6773e3b84b703a3ca3b5b3fd941b2..6c20b6515ab08ad694a2efea0fe76e3b4aeea6dd 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -662,7 +662,7 @@ int cfg80211_wext_siwscan(struct net_device *dev,
 				int k;
 				int wiphy_freq = wiphy->bands[band]->channels[j].center_freq;
 				for (k = 0; k < wreq->num_channels; k++) {
-					int wext_freq = wreq->channel_list[k].m / 100000;
+					int wext_freq = cfg80211_wext_freq(wiphy, &wreq->channel_list[k]);
 					if (wext_freq == wiphy_freq)
 						goto wext_freq_found;
 				}