diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 2331469f943d..bd08b53ff81d 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -328,6 +328,9 @@ static struct dwc3_ep *dwc3_wIndex_to_dep(struct dwc3 *dwc, __le16 wIndex_le)
 		epnum |= 1;
 
 	dep = dwc->eps[epnum];
+	if (dep == NULL)
+		return NULL;
+
 	if (dep->flags & DWC3_EP_ENABLED)
 		return dep;