diff --git a/drivers/staging/ath6kl/Makefile b/drivers/staging/ath6kl/Makefile
index d7441e75e2ac..50f9be3eefcb 100644
--- a/drivers/staging/ath6kl/Makefile
+++ b/drivers/staging/ath6kl/Makefile
@@ -110,7 +110,6 @@ ifeq ($(CONFIG_ATH6KL_SKIP_ABI_VERSION_CHECK),y)
 ccflags-y += -DATH6KL_SKIP_ABI_VERSION_CHECK
 endif
 
-ccflags-y += -DNO_SYNC_FLUSH
 ccflags-y += -DHTC_EP_STAT_PROFILING
 ccflags-y += -DWAPI_ENABLE
 ccflags-y += -DCHECKSUM_OFFLOAD