diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 8d86e39d6280a6112ca37ecd1732da70819b1f98..a30536b17ee143f36e04fad4b8ae115b5e3edfe4 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -288,8 +288,7 @@ static int htable_create(struct net *net, struct hashlimit_cfg3 *cfg,
 			size = 16;
 	}
 	/* FIXME: don't use vmalloc() here or anywhere else -HW */
-	hinfo = vmalloc(sizeof(struct xt_hashlimit_htable) +
-	                sizeof(struct hlist_head) * size);
+	hinfo = vmalloc(struct_size(hinfo, hash, size));
 	if (hinfo == NULL)
 		return -ENOMEM;
 	*out_hinfo = hinfo;