diff --git a/hw/usb/hcd-uhci.c b/hw/usb/hcd-uhci.c
index a06372b461..f4b555addc 100644
--- a/hw/usb/hcd-uhci.c
+++ b/hw/usb/hcd-uhci.c
@@ -896,6 +896,11 @@ static int uhci_handle_td(UHCIState *s, UHCIQueue *q, uint32_t qh_addr,
     if (q == NULL) {
         USBDevice *dev = uhci_find_device(s, (td->token >> 8) & 0x7f);
         USBEndpoint *ep = usb_ep_get(dev, pid, (td->token >> 15) & 0xf);
+
+        if (ep == NULL) {
+            return uhci_handle_td_error(s, td, td_addr, USB_RET_NODEV,
+                                        int_mask);
+        }
         q = uhci_queue_new(s, qh_addr, td, ep);
     }
     async = uhci_async_alloc(q, td_addr);