diff --git a/core/rtw_mlme.c b/core/rtw_mlme.c
index c88ef60b..5e82a90f 100644
--- a/core/rtw_mlme.c
+++ b/core/rtw_mlme.c
@@ -31,12 +31,7 @@
 #include <rtw_mlme.h>
 #include <linux/vmalloc.h>
 
-#ifdef CONFIG_DISABLE_MCS13TO15
-extern unsigned char MCS_rate_2R_MCS13TO15_OFF[16];
 extern unsigned char MCS_rate_2R[16];
-#else /* CONFIG_DISABLE_MCS13TO15 */
-extern unsigned char MCS_rate_2R[16];
-#endif /* CONFIG_DISABLE_MCS13TO15 */
 extern unsigned char MCS_rate_1R[16];
 
 int _rtw_init_mlme_priv(struct rtw_adapter *padapter)
@@ -2839,19 +2834,8 @@ void rtw_update_ht_cap(struct rtw_adapter *padapter, u8 *pie, uint ie_len,
 				pmlmeinfo->HT_caps.u.HT_cap_element.
 				    MCS_rate[i] &= MCS_rate_1R[i];
 			} else {
-#ifdef CONFIG_DISABLE_MCS13TO15
-				if (pmlmeext->cur_bwmode == HT_CHANNEL_WIDTH_40 &&
-				    pregistrypriv->wifi_spec != 1) {
-					pmlmeinfo->HT_caps.u.HT_cap_element.
-					    MCS_rate[i] &=
-					    MCS_rate_2R_MCS13TO15_OFF[i];
-				} else
-					pmlmeinfo->HT_caps.u.HT_cap_element.
-					    MCS_rate[i] &= MCS_rate_2R[i];
-#else
 				pmlmeinfo->HT_caps.u.HT_cap_element.
 				    MCS_rate[i] &= MCS_rate_2R[i];
-#endif /* CONFIG_DISABLE_MCS13TO15 */
 			}
 			if (pregistrypriv->special_rf_path)
 				pmlmeinfo->HT_caps.u.HT_cap_element.
diff --git a/core/rtw_mlme_ext.c b/core/rtw_mlme_ext.c
index 4de297be..2edb0716 100644
--- a/core/rtw_mlme_ext.c
+++ b/core/rtw_mlme_ext.c
@@ -106,21 +106,11 @@ extern unsigned char REALTEK_96B_IE[];
 /********************************************************
 MCS rate definitions
 *********************************************************/
-#ifdef CONFIG_DISABLE_MCS13TO15
-unsigned char MCS_rate_2R_MCS13TO15_OFF[16] = {
-	0xff, 0x1f, 0x0, 0x0, 0x01, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-	0x0, 0x0
-};
-unsigned char MCS_rate_2R[16] = {
-	0xff, 0xff, 0x0, 0x0, 0x01, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
-	0x0, 0x0
-};
-#else /* CONFIG_DISABLE_MCS13TO15 */
 unsigned char MCS_rate_2R[16] = {
 	0xff, 0xff, 0x0, 0x0, 0x01, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
 	0x0, 0x0
 };
-#endif /* CONFIG_DISABLE_MCS13TO15 */
+
 unsigned char MCS_rate_1R[16] = {
 	0xff, 0x00, 0x0, 0x0, 0x01, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
 	0x0, 0x0
@@ -7104,19 +7094,8 @@ void issue_assocreq(struct rtw_adapter *adapt)
 					    ("declare supporting RX STBC\n");
 					pmlmeinfo->HT_caps.u.HT_cap_element.HT_caps_info |= cpu_to_le16(0x0200);	/* RX STBC two spatial stream */
 				}
-#ifdef CONFIG_DISABLE_MCS13TO15
-				if (pmlmeext->cur_bwmode == HT_CHANNEL_WIDTH_40 && (pregpriv->wifi_spec != 1))
-					memcpy(pmlmeinfo->HT_caps.u.
-					       HT_cap_element.MCS_rate,
-					       MCS_rate_2R_MCS13TO15_OFF, 16);
-				else
-					memcpy(pmlmeinfo->HT_caps.u.
-					       HT_cap_element.MCS_rate,
-					       MCS_rate_2R, 16);
-#else /* CONFIG_DISABLE_MCS13TO15 */
 				memcpy(pmlmeinfo->HT_caps.u.HT_cap_element.
 				       MCS_rate, MCS_rate_2R, 16);
-#endif /* CONFIG_DISABLE_MCS13TO15 */
 				break;
 			}
 			pmlmeinfo->HT_caps.u.HT_cap_element.HT_caps_info =
diff --git a/core/rtw_wlan_util.c b/core/rtw_wlan_util.c
index 39b670d2..062392a4 100644
--- a/core/rtw_wlan_util.c
+++ b/core/rtw_wlan_util.c
@@ -875,18 +875,10 @@ void HT_caps_handler(struct rtw_adapter *padapter, struct ndis_802_11_variable_i
 
 	/* update the MCS rates */
 	for (i = 0; i < 16; i++) {
-		if ((rf_type == RF_1T1R) || (rf_type == RF_1T2R)) {
+		if ((rf_type == RF_1T1R) || (rf_type == RF_1T2R))
 			pmlmeinfo->HT_caps.u.HT_cap_element.MCS_rate[i] &= MCS_rate_1R[i];
-		} else {
-			#ifdef CONFIG_DISABLE_MCS13TO15
-			if (pmlmeext->cur_bwmode == HT_CHANNEL_WIDTH_40 && (pregistrypriv->wifi_spec != 1))
-				pmlmeinfo->HT_caps.u.HT_cap_element.MCS_rate[i] &= MCS_rate_2R_MCS13TO15_OFF[i];
-			else
-				pmlmeinfo->HT_caps.u.HT_cap_element.MCS_rate[i] &= MCS_rate_2R[i];
-			#else
+		else
 			pmlmeinfo->HT_caps.u.HT_cap_element.MCS_rate[i] &= MCS_rate_2R[i];
-			#endif /* CONFIG_DISABLE_MCS13TO15 */
-		}
 		if (pregistrypriv->special_rf_path)
 			pmlmeinfo->HT_caps.u.HT_cap_element.MCS_rate[i] &= MCS_rate_1R[i];
 	}
diff --git a/include/wifi.h b/include/wifi.h
index a7d18a46..18d7a055 100644
--- a/include/wifi.h
+++ b/include/wifi.h
@@ -1127,9 +1127,6 @@ enum P2P_PS_MODE
 #define ICMPV6_MCAST_MAC(mac)	((mac[0]==0x33)&&(mac[1]==0x33)&&(mac[2]!=0xff))
 extern unsigned char REALTEK_96B_IE[6];
 extern unsigned char MCS_rate_2R[16];
-#ifdef CONFIG_DISABLE_MCS13TO15
-extern unsigned char MCS_rate_2R_MCS13TO15_OFF[16];
-#endif /* CONFIG_DISABLE_MCS13TO15 */
 extern unsigned char MCS_rate_1R[16];
 extern unsigned char RTW_WPA_OUI[];
 extern unsigned char WPA_TKIP_CIPHER[4];