diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 4dea3e08f95c..3c4fd4854317 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -868,6 +868,9 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep)
 	trbs_left = dep->trb_dequeue - dep->trb_enqueue;
 	trbs_left %= DWC3_TRB_NUM;
 
+	if (dep->trb_dequeue < dep->trb_enqueue)
+		trbs_left--;
+
 	return trbs_left;
 }