diff --git a/core/rtw_mlme_ext.c b/core/rtw_mlme_ext.c
index fb2c33b..34b9fa9 100644
--- a/core/rtw_mlme_ext.c
+++ b/core/rtw_mlme_ext.c
@@ -258,7 +258,7 @@ void rtw_txpwr_init_regd(struct rf_ctl_t *rfctl)
 		);
 		if (rfctl->regd_name)
 			break;
-		// Intentional fallthrough
+		__attribute__ ((__fallthrough__));
 	default:
 		rfctl->regd_name = regd_str(TXPWR_LMT_WW);
 		RTW_PRINT("assign %s for default case\n", regd_str(TXPWR_LMT_WW));
@@ -1343,7 +1343,11 @@ void mgt_dispatcher(_adapter *padapter, union recv_frame *precv_frame)
 			ptable->func = &OnAuth;
 		else
 			ptable->func = &OnAuthClient;
-	// Intentional fallthrough
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
+	__attribute__ ((fallthrough));
+#else
+			__attribute__ ((__fallthrough__));
+#endif
 	case WIFI_ASSOCREQ:
 	case WIFI_REASSOCREQ:
 		_mgt_dispatcher(padapter, ptable, precv_frame);
diff --git a/dkms.conf b/dkms.conf
index f60e068..2f93af2 100644
--- a/dkms.conf
+++ b/dkms.conf
@@ -1,5 +1,5 @@
 PACKAGE_NAME="realtek-rtl88xxau"
-PACKAGE_VERSION="5.6.4.2~20200111"
+PACKAGE_VERSION="5.6.4.2~20200120"
 CLEAN="'make' clean"
 BUILT_MODULE_NAME[0]=88XXau
 PROCS_NUM=`nproc`