diff --git a/core/rtw_mlme_ext.c b/core/rtw_mlme_ext.c
index ca4a0fa..75cb5d5 100644
--- a/core/rtw_mlme_ext.c
+++ b/core/rtw_mlme_ext.c
@@ -258,6 +258,7 @@ void rtw_txpwr_init_regd(struct rf_ctl_t *rfctl)
 		);
 		if (rfctl->regd_name)
 			break;
+		__attribute__ ((__fallthrough__));
 	default:
 		rfctl->regd_name = regd_str(TXPWR_LMT_WW);
 		RTW_PRINT("assign %s for default case\n", regd_str(TXPWR_LMT_WW));
@@ -1342,7 +1343,11 @@ void mgt_dispatcher(_adapter *padapter, union recv_frame *precv_frame)
 			ptable->func = &OnAuth;
 		else
 			ptable->func = &OnAuthClient;
-	/* pass through */
+#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);