diff --git a/Makefile b/Makefile
index 4b0431d..f887cc3 100755
--- a/Makefile
+++ b/Makefile
@@ -167,6 +167,10 @@ ifeq ($(CONFIG_DISABLE_REGD_C), y)
 EXTRA_CFLAGS += -DCONFIG_DISABLE_REGD_C
 endif
 
+ifeq ($(CONFIG_MP_VHT_HW_TX_MODE), y)
+EXTRA_CFLAGS += -DCONFIG_MP_VHT_HW_TX_MODE
+endif
+
 ifeq ($(CONFIG_GSPI_HCI), y)
 HCI_NAME = gspi
 endif
@@ -372,10 +376,6 @@ endif
 
 ########### HAL_RTL8814A #################################
 ifeq ($(CONFIG_RTL8814A), y)
-## ADD NEW VHT MP HW TX MODE ##
-#EXTRA_CFLAGS += -DCONFIG_MP_VHT_HW_TX_MODE
-#CONFIG_MP_VHT_HW_TX_MODE = y
-##########################################
 RTL871X = rtl8814a
 ifeq ($(CONFIG_USB_HCI), y)
 MODULE_NAME = 8814au
@@ -1394,6 +1394,7 @@ KSRC := /lib/modules/$(KVER)/build
 MODDESTDIR := /lib/modules/$(KVER)/kernel/drivers/net/wireless/
 INSTALL_PREFIX :=
 endif
+
 ifeq ($(CONFIG_PLATFORM_ARM_ODROIDC2), y)
 EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
 EXTRA_CFLAGS += -DCONFIG_IOCTL_CFG80211 -DRTW_USE_CFG80211_STA_EVENT
diff --git a/os_dep/linux/wifi_regd.c b/os_dep/linux/wifi_regd.c
index e1751ce..189c5db 100644
--- a/os_dep/linux/wifi_regd.c
+++ b/os_dep/linux/wifi_regd.c
@@ -258,6 +258,7 @@ static void _rtw_reg_apply_active_scan_flags(struct wiphy *wiphy,
  */
 static void _rtw_reg_apply_radar_flags(struct wiphy *wiphy)
 {
+#ifndef CONFIG_DISABLE_REGD_C
 	struct ieee80211_supported_band *sband;
 	struct ieee80211_channel *ch;
 	unsigned int i;
@@ -304,6 +305,7 @@ static void _rtw_reg_apply_radar_flags(struct wiphy *wiphy)
 				     IEEE80211_CHAN_PASSIVE_SCAN;
 #endif
 	}
+#endif // CONFIG_DISABLE_REGD_C
 }
 
 static void _rtw_reg_apply_flags(struct wiphy *wiphy)