diff --git a/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c b/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c
index 4977462ad83..78f2ecd2063 100644
--- a/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c
+++ b/sys/dev/ath/ath_hal/ar5416/ar5416_attach.c
@@ -811,6 +811,7 @@ ar5416FillCapabilityInfo(struct ath_hal *ah)
 	pCap->halWowMatchPatternExact = AH_FALSE;
 	pCap->halBtCoexSupport = AH_FALSE;	/* XXX need support */
 	pCap->halAutoSleepSupport = AH_FALSE;
+	pCap->hal4kbSplitTransSupport = AH_TRUE;
 #if 0	/* XXX not yet */
 	pCap->halNumAntCfg2GHz = ar5416GetNumAntConfig(ahp, HAL_FREQ_BAND_2GHZ);
 	pCap->halNumAntCfg5GHz = ar5416GetNumAntConfig(ahp, HAL_FREQ_BAND_5GHZ);