diff --git a/core/rtw_mp.c b/core/rtw_mp.c
index 4f7287d..2e5b4de 100644
--- a/core/rtw_mp.c
+++ b/core/rtw_mp.c
@@ -1081,12 +1081,7 @@ u32 mp_query_psd(PADAPTER pAdapter, u8 *data)
 		i++;
 	}
 
-	#ifdef CONFIG_LONG_DELAY_ISSUE
 	rtw_msleep_os(100);
-	#else
-	rtw_mdelay_os(100);
-	#endif
-
 	return strlen(data)+1;
 }
 
diff --git a/hal/odm_RegConfig8188E.c b/hal/odm_RegConfig8188E.c
index bf3a658..d864b83 100644
--- a/hal/odm_RegConfig8188E.c
+++ b/hal/odm_RegConfig8188E.c
@@ -33,11 +33,7 @@ odm_ConfigRFReg_8188E(
 {
     if (Addr == 0xffe)
 	{
-		#ifdef CONFIG_LONG_DELAY_ISSUE
 		ODM_sleep_ms(50);
-		#else
-		ODM_delay_ms(50);
-		#endif
 	}
 	else if (Addr == 0xfd)
 	{
@@ -134,11 +130,7 @@ odm_ConfigBB_PHY_REG_PG_8188E(
     )
 {
 	if (Addr == 0xfe){
-		#ifdef CONFIG_LONG_DELAY_ISSUE
 		ODM_sleep_ms(50);
-		#else
-		ODM_delay_ms(50);
-		#endif
 	}
 	else if (Addr == 0xfd){
 		ODM_delay_ms(5);
@@ -174,11 +166,7 @@ odm_ConfigBB_PHY_8188E(
     )
 {
 	if (Addr == 0xfe){
-		#ifdef CONFIG_LONG_DELAY_ISSUE
 		ODM_sleep_ms(50);
-		#else
-		ODM_delay_ms(50);
-		#endif
 	}
 	else if (Addr == 0xfd){
 		ODM_delay_ms(5);
diff --git a/hal/rtl8188e_phycfg.c b/hal/rtl8188e_phycfg.c
index 7039216..47eacb8 100644
--- a/hal/rtl8188e_phycfg.c
+++ b/hal/rtl8188e_phycfg.c
@@ -951,11 +951,7 @@ phy_ConfigBBWithHeaderFile(
 		for (i=0;i<PHY_REGArrayLen;i=i+2)
 		{
 			if (Rtl819XPHY_REGArray_Table[i] == 0xfe){
-				#ifdef CONFIG_LONG_DELAY_ISSUE
 				rtw_msleep_os(50);
-				#else
-				rtw_mdelay_os(50);
-				#endif
 			}
 			else if (Rtl819XPHY_REGArray_Table[i] == 0xfd)
 				rtw_mdelay_os(5);
@@ -1434,11 +1430,7 @@ rtl8188e_PHY_ConfigRFWithHeaderFile(
 			for (i = 0;i<RadioA_ArrayLen; i=i+2)
 			{
 				if (Rtl819XRadioA_Array_Table[i] == 0xfe) {
-					#ifdef CONFIG_LONG_DELAY_ISSUE
 					rtw_msleep_os(50);
-					#else
-					rtw_mdelay_os(50);
-					#endif
 				}
 				else if (Rtl819XRadioA_Array_Table[i] == 0xfd)
 					rtw_mdelay_os(5);
@@ -1502,11 +1494,7 @@ rtl8188e_PHY_ConfigRFWithHeaderFile(
 			{
 				if (Rtl819XRadioB_Array_Table[i] == 0xfe)
 				{ /*  Delay specific ms. Only RF configuration require delay. */
-					#ifdef CONFIG_LONG_DELAY_ISSUE
 					rtw_msleep_os(50);
-					#else
-					rtw_mdelay_os(50);
-					#endif
 				}
 				else if (Rtl819XRadioB_Array_Table[i] == 0xfd)
 					rtw_mdelay_os(5);
diff --git a/include/autoconf.h b/include/autoconf.h
index 6798468..f3ecab4 100644
--- a/include/autoconf.h
+++ b/include/autoconf.h
@@ -127,7 +127,6 @@
 #define USB_INTERFERENCE_ISSUE // this should be checked in all usb interface
 #define CONFIG_GLOBAL_UI_PID
 
-#define CONFIG_LONG_DELAY_ISSUE
 #define CONFIG_NEW_SIGNAL_STAT_PROCESS
 #define RTW_NOTCH_FILTER 0 /* 0:Disable, 1:Enable, */