diff --git a/port/ehci/usb_glue_bouffalo.c b/port/ehci/usb_glue_bouffalo.c
index 4a50a230..d367fd2e 100644
--- a/port/ehci/usb_glue_bouffalo.c
+++ b/port/ehci/usb_glue_bouffalo.c
@@ -34,6 +34,10 @@
 
 extern void USBH_IRQHandler(uint8_t busid);
 
+void USBH_IRQ(int irq, void *arg) {
+    USBH_IRQHandler(0);
+}
+
 static void bflb_usb_phy_init(void)
 {
     uint32_t regval;
@@ -89,7 +93,7 @@ void usb_hc_low_level_init(struct usbh_bus *bus)
 
     bflb_usb_phy_init();
 
-    bflb_irq_attach(37, USBH_IRQHandler, 0);
+    bflb_irq_attach(37, USBH_IRQ, NULL);
     bflb_irq_enable(37);
 
     /* enable device-A for host */