diff --git a/Makefile b/Makefile
index bb523d5..4eb9f33 100755
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,6 @@ CONFIG_USB_HCI = y
 
 CONFIG_POWER_SAVING = y
 CONFIG_USB_AUTOSUSPEND = n
-CONFIG_HW_PWRP_DETECTION = n
 CONFIG_BT_COEXIST = n
 CONFIG_INTEL_WIDI = n
 CONFIG_WAPI_SUPPORT = n
@@ -102,10 +101,6 @@ ifeq ($(CONFIG_POWER_SAVING), y)
 EXTRA_CFLAGS += -DCONFIG_POWER_SAVING
 endif
 
-ifeq ($(CONFIG_HW_PWRP_DETECTION), y)
-EXTRA_CFLAGS += -DCONFIG_HW_PWRP_DETECTION
-endif
-
 ifeq ($(CONFIG_BT_COEXIST), y)
 EXTRA_CFLAGS += -DCONFIG_BT_COEXIST
 endif
diff --git a/os_dep/os_intfs.c b/os_dep/os_intfs.c
index bb377f9..44a055c 100755
--- a/os_dep/os_intfs.c
+++ b/os_dep/os_intfs.c
@@ -137,11 +137,7 @@ static int rtw_enusbss = 0;/* 0:disable,1:enable */
 
 static int rtw_hwpdn_mode=2;/* 0:disable,1:enable,2: by EFUSE config */
 
-#ifdef CONFIG_HW_PWRP_DETECTION
-static int rtw_hwpwrp_detect = 1;
-#else
 static int rtw_hwpwrp_detect = 0; /* HW power  ping detect 0:disable , 1:enable */
-#endif
 
 static int rtw_hw_wps_pbc = 1;