diff --git a/boot/zephyr/boards/nrf52840_big.overlay b/boot/zephyr/boards/nrf52840_big.overlay
index 778a1edc..8ad19fca 100644
--- a/boot/zephyr/boards/nrf52840_big.overlay
+++ b/boot/zephyr/boards/nrf52840_big.overlay
@@ -32,6 +32,5 @@
 &zephyr_udc0 {
 	cdc_acm_uart0 {
 		compatible = "zephyr,cdc-acm-uart";
-		label = "CDC_ACM_0";
 	};
 };
diff --git a/boot/zephyr/usb_cdc_acm.overlay b/boot/zephyr/usb_cdc_acm.overlay
index 09eb8cff..800d63ca 100644
--- a/boot/zephyr/usb_cdc_acm.overlay
+++ b/boot/zephyr/usb_cdc_acm.overlay
@@ -1,6 +1,5 @@
 &zephyr_udc0 {
 	cdc_acm_uart0 {
 		compatible = "zephyr,cdc-acm-uart";
-		label = "CDC_ACM_0";
 	};
 };