diff --git a/sys/contrib/dev/ath/ath_hal/ar9300/ar9300_freebsd_inc.h b/sys/contrib/dev/ath/ath_hal/ar9300/ar9300_freebsd_inc.h
index 4c582071af9..c13beb417eb 100644
--- a/sys/contrib/dev/ath/ath_hal/ar9300/ar9300_freebsd_inc.h
+++ b/sys/contrib/dev/ath/ath_hal/ar9300/ar9300_freebsd_inc.h
@@ -34,6 +34,7 @@
 #define ATH_SUPPORT_WIFIPOS     0
 #define ATH_SUPPORT_PAPRD       1
 #define ATH_SUPPORT_TxBF        0
+#define AH_PRIVATE_DIAG         1
 
 /* XXX need to reverify these; they came in with qcamain */
 #define ATH_SUPPORT_FAST_CC 0