diff --git a/sys/contrib/dev/ath/ath_hal/ar9300/ar9300_misc.c b/sys/contrib/dev/ath/ath_hal/ar9300/ar9300_misc.c
index 4b429f53fdf0..a0722b72f8b7 100644
--- a/sys/contrib/dev/ath/ath_hal/ar9300/ar9300_misc.c
+++ b/sys/contrib/dev/ath/ath_hal/ar9300/ar9300_misc.c
@@ -1185,9 +1185,11 @@ ar9300_get_diag_state(struct ath_hal *ah, int request,
         ar9300_ani_control(
             ah, ((const u_int32_t *)args)[0], ((const u_int32_t *)args)[1]);
         return AH_TRUE;
+#if 0
     case HAL_DIAG_TXCONT:
         /*AR9300_CONTTXMODE(ah, (struct ath_desc *)args, argsize );*/
         return AH_TRUE;
+#endif /* 0 */
 #endif /* AH_PRIVATE_DIAG */
     case HAL_DIAG_CHANNELS:
 #if 0