diff --git a/drivers/usb/udc/udc_kinetis.c b/drivers/usb/udc/udc_kinetis.c
index 38dd1db2d04..b424ce03724 100644
--- a/drivers/usb/udc/udc_kinetis.c
+++ b/drivers/usb/udc/udc_kinetis.c
@@ -448,6 +448,8 @@ static void usbfsotg_event_submit(const struct device *dev,
 	ret = k_mem_slab_alloc(&usbfsotg_ee_slab, (void **)&ev, K_NO_WAIT);
 	if (ret) {
 		udc_submit_event(dev, UDC_EVT_ERROR, ret);
+		LOG_ERR("Failed to allocate slab");
+		return;
 	}
 
 	ev->dev = dev;