diff --git a/hal/usb_halinit.c b/hal/usb_halinit.c
index 45f241f..144cc5f 100644
--- a/hal/usb_halinit.c
+++ b/hal/usb_halinit.c
@@ -1923,7 +1923,7 @@ static void GetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val)
 	switch (variable) {
 	case HW_VAR_BASIC_RATE:
 		*((u16 *)(val)) = haldata->BasicRateSet;
-		__attribute__((fallthrough));
+		__attribute__((__fallthrough__));
 	case HW_VAR_TXPAUSE:
 		val[0] = rtw_read8(Adapter, REG_TXPAUSE);
 		break;
diff --git a/hal/usb_ops_linux.c b/hal/usb_ops_linux.c
index 166d85f..a5cfb79 100644
--- a/hal/usb_ops_linux.c
+++ b/hal/usb_ops_linux.c
@@ -553,7 +553,7 @@ static void usb_read_port_complete(struct urb *purb, struct pt_regs *regs)
 		case -ENODEV:
 		case -ESHUTDOWN:
 			RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete:bSurpriseRemoved=true\n"));
-			__attribute__((fallthrough));
+			__attribute__((__fallthrough__));
 		case -ENOENT:
 			adapt->bDriverStopped = true;
 			RT_TRACE(_module_hci_ops_os_c_, _drv_err_, ("usb_read_port_complete:bDriverStopped=true\n"));