diff --git a/core/rtw_mlme.c b/core/rtw_mlme.c
index bcaa257..e2f815a 100755
--- a/core/rtw_mlme.c
+++ b/core/rtw_mlme.c
@@ -36,12 +36,7 @@
 extern void indicate_wx_scan_complete_event(struct adapter *padapter);
 extern u8 rtw_do_join(struct adapter * padapter);
 
-#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];
 
 sint	_rtw_init_mlme_priv (struct adapter* padapter)
@@ -3103,16 +3098,7 @@ void rtw_update_ht_cap(struct adapter *padapter, u8 *pie, uint ie_len)
 			}
 			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 */
 			}
 			#ifdef RTL8192C_RECONFIG_TO_1T1R
 			{
diff --git a/core/rtw_mlme_ext.c b/core/rtw_mlme_ext.c
index b84c082..fdab99e 100755
--- a/core/rtw_mlme_ext.c
+++ b/core/rtw_mlme_ext.c
@@ -98,12 +98,7 @@ unsigned char RSN_TKIP_CIPHER[4] = {0x00, 0x0f, 0xac, 0x02};
 /********************************************************
 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};
 
 /********************************************************
@@ -6966,14 +6961,7 @@ void issue_assocreq(struct adapter *padapter)
 					DBG_871X("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;
 			}
 #ifdef RTL8192C_RECONFIG_TO_1T1R
diff --git a/core/rtw_wlan_util.c b/core/rtw_wlan_util.c
index f780a3f..6048324 100755
--- a/core/rtw_wlan_util.c
+++ b/core/rtw_wlan_util.c
@@ -1040,14 +1040,7 @@ void HT_caps_handler(struct adapter *padapter, PNDIS_802_11_VARIABLE_IEs pIE)
 		}
 		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 */
 		}
 	        #ifdef RTL8192C_RECONFIG_TO_1T1R
 		{
diff --git a/include/osdep_service.h b/include/osdep_service.h
index 88d0952..36a96b6 100755
--- a/include/osdep_service.h
+++ b/include/osdep_service.h
@@ -94,9 +94,6 @@ extern int rtw_ampdu_enable;//for enable tx_ampdu
 extern int ui_pid[3];
 
 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];