diff --git a/sys/conf/options b/sys/conf/options
index 9224148efd7..b3642e9f1f1 100644
--- a/sys/conf/options
+++ b/sys/conf/options
@@ -783,6 +783,7 @@ AH_NEED_DESC_SWAP	opt_ah.h
 AH_USE_INIPDGAIN	opt_ah.h
 AH_MAXCHAN		opt_ah.h
 AH_RXCFG_SDMAMW_4BYTES	opt_ah.h
+AH_ENABLE_11N		opt_ah.h
 
 # options for the Broadcom BCM43xx driver (bwi)
 BWI_DEBUG		opt_bwi.h
diff --git a/sys/dev/ath/if_ath.c b/sys/dev/ath/if_ath.c
index da66241942c..53f6eab55e3 100644
--- a/sys/dev/ath/if_ath.c
+++ b/sys/dev/ath/if_ath.c
@@ -612,7 +612,7 @@ ath_attach(u_int16_t devid, struct ath_softc *sc)
 	 * Don't think of doing that unless you know what you're doing.
 	 */
 
-#ifdef	DO_ATH_11N
+#ifdef	AH_ENABLE_11N
 	/*
 	 * Query HT capabilities
 	 */