diff --git a/src/platforms/common/cdcacm.c b/src/platforms/common/cdcacm.c
index c16ddfea..c7f2723a 100644
--- a/src/platforms/common/cdcacm.c
+++ b/src/platforms/common/cdcacm.c
@@ -504,7 +504,7 @@ static void cdcacm_set_config(usbd_device *dev, uint16_t wValue)
 	configured = wValue;
 
 	/* GDB interface */
-#if defined(STM32F4) || defined(LM4F)
+#if defined(STM32F4) || defined(LM4F) || defined(SAMD)
 	usbd_ep_setup(dev, 0x01, USB_ENDPOINT_ATTR_BULK,
 	              CDCACM_PACKET_SIZE, gdb_usb_out_cb);
 #else