--- a/ath/if_ath.c
+++ b/ath/if_ath.c
@@ -504,7 +504,7 @@
 
 	/* Allocate space for dynamically determined maximum VAP count */
 	sc->sc_bslot = 
-		kzalloc(ath_maxvaps * sizeof(struct ieee80211vap), GFP_KERNEL);
+		kzalloc(ath_maxvaps * sizeof(struct ieee80211vap *), GFP_KERNEL);
 
 	/*
 	 * Cache line size is used to size and align various
