diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 03a59253d088..74d6c30c3b54 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -769,7 +769,8 @@ static int dwc3_gadget_resize_tx_fifos(struct dwc3_ep *dep)
 		num_fifos = 3;
 
 	if (dep->endpoint.maxburst > 6 &&
-	    usb_endpoint_xfer_bulk(dep->endpoint.desc) && DWC3_IP_IS(DWC31))
+	    (usb_endpoint_xfer_bulk(dep->endpoint.desc) ||
+	     usb_endpoint_xfer_isoc(dep->endpoint.desc)) && DWC3_IP_IS(DWC31))
 		num_fifos = dwc->tx_fifo_resize_max_num;
 
 	/* FIFO size for a single buffer */