diff --git a/drivers/usb/gadget/function/f_ecm.c b/drivers/usb/gadget/function/f_ecm.c
index 798760fa7e70..7b7424f10ddd 100644
--- a/drivers/usb/gadget/function/f_ecm.c
+++ b/drivers/usb/gadget/function/f_ecm.c
@@ -585,8 +585,8 @@ static int ecm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 			/* Enable zlps by default for ECM conformance;
 			 * override for musb_hdrc (avoids txdma ovhead).
 			 */
-			ecm->port.is_zlp_ok = !(gadget_is_musbhdrc(cdev->gadget)
-				);
+			ecm->port.is_zlp_ok =
+				gadget_is_zlp_supported(cdev->gadget);
 			ecm->port.cdc_filter = DEFAULT_FILTER;
 			DBG(cdev, "activate ecm\n");
 			net = gether_connect(&ecm->port);
diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c
index bdcda9f5148e..3f05c6bd57f0 100644
--- a/drivers/usb/gadget/function/f_ncm.c
+++ b/drivers/usb/gadget/function/f_ncm.c
@@ -853,9 +853,8 @@ static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 			/* Enable zlps by default for NCM conformance;
 			 * override for musb_hdrc (avoids txdma ovhead)
 			 */
-			ncm->port.is_zlp_ok = !(
-				gadget_is_musbhdrc(cdev->gadget)
-				);
+			ncm->port.is_zlp_ok =
+				gadget_is_zlp_supported(cdev->gadget);
 			ncm->port.cdc_filter = DEFAULT_FILTER;
 			DBG(cdev, "activate ncm\n");
 			net = gether_connect(&ncm->port);