diff --git a/Makefile b/Makefile
index ec672d1..3e9c9fa 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,6 @@ CONFIG_RTL8188E = y
 
 CONFIG_USB_HCI = y
 
-CONFIG_POWER_SAVING = y
 CONFIG_USB_AUTOSUSPEND = n
 CONFIG_BT_COEXIST = n
 CONFIG_WOWLAN = n
@@ -96,10 +95,6 @@ ifeq ($(CONFIG_USB_AUTOSUSPEND), y)
 EXTRA_CFLAGS += -DCONFIG_USB_AUTOSUSPEND
 endif
 
-ifeq ($(CONFIG_POWER_SAVING), y)
-EXTRA_CFLAGS += -DCONFIG_POWER_SAVING
-endif
-
 ifeq ($(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 ab9ebdb..af23880 100644
--- a/os_dep/os_intfs.c
+++ b/os_dep/os_intfs.c
@@ -53,13 +53,8 @@ static int rtw_preamble = PREAMBLE_LONG;//long, short, auto
 static int rtw_scan_mode = 1;//active, passive
 static int rtw_adhoc_tx_pwr = 1;
 static int rtw_soft_ap = 0;
-#ifdef CONFIG_POWER_SAVING
 static int rtw_power_mgnt = 1;
 static int rtw_ips_mode = IPS_NORMAL;
-#else
-static int rtw_power_mgnt = PS_MODE_ACTIVE;
-static int rtw_ips_mode = IPS_NONE;
-#endif
 
 static int rtw_smart_ps = 2;