diff --git a/sys/dev/ath/if_athioctl.h b/sys/dev/ath/if_athioctl.h
index 644d3184fb4..9c41aa5ad45 100644
--- a/sys/dev/ath/if_athioctl.h
+++ b/sys/dev/ath/if_athioctl.h
@@ -130,7 +130,7 @@ struct ath_stats {
 	u_int32_t	ast_tx_htprotect;	/* HT tx frames with protection */
 	u_int32_t	ast_rx_hitqueueend;
 	u_int32_t	ast_tx_timeout;		/* Global TX timeout */
-	u_int32_t	ast_pad[1];
+	u_int32_t	ast_pad[16];
 };
 
 #define	SIOCGATHSTATS	_IOWR('i', 137, struct ifreq)