diff --git a/sys/dev/rtwn/if_rtwn.c b/sys/dev/rtwn/if_rtwn.c
--- a/sys/dev/rtwn/if_rtwn.c
+++ b/sys/dev/rtwn/if_rtwn.c
@@ -326,12 +326,10 @@
 	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
 	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
 
-#if 1
 	sc->sc_ht40 = 0;
 	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
 	    "ht40", CTLFLAG_RDTUN, &sc->sc_ht40,
 	    sc->sc_ht40, "Enable 40 MHz mode support");
-#endif
 
 #ifdef RTWN_DEBUG
 	SYSCTL_ADD_U32(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
diff --git a/sys/dev/rtwn/if_rtwnvar.h b/sys/dev/rtwn/if_rtwnvar.h
--- a/sys/dev/rtwn/if_rtwnvar.h
+++ b/sys/dev/rtwn/if_rtwnvar.h
@@ -171,9 +171,7 @@
 	struct mbufq		sc_snd;
 	device_t		sc_dev;
 
-#if 1
 	int			sc_ht40;
-#endif
 	uint32_t		sc_debug;
 	int			sc_hwcrypto;
 	int			sc_ratectl_sysctl;