diff --git a/net/wireless/util.c b/net/wireless/util.c
index 3c654cd..908bf5b 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1374,7 +1374,7 @@ bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef,
 					  u8 *op_class)
 {
 	u8 vht_opclass;
-	u16 freq = chandef->center_freq1;
+	u32 freq = chandef->center_freq1;
 
 	if (freq >= 2412 && freq <= 2472) {
 		if (chandef->width > NL80211_CHAN_WIDTH_40)