diff --git a/lib/usb_cdcacm.c b/lib/usb_cdcacm.c
index 2f9a3dc..cb6290f 100644
--- a/lib/usb_cdcacm.c
+++ b/lib/usb_cdcacm.c
@@ -13,9 +13,9 @@
  *
  */
 /** library for USB CDC ACM communication (code)
- *  @file usb_cdcacm.c
+ *  @file
  *  @author King Kévin <kingkevin@cuvoodoo.info>
- *  @date 2016-2018
+ *  @date 2016-2019
  */
 
 /* standard libraries */
@@ -234,7 +234,7 @@ static const struct usb_config_descriptor usb_cdcacm_configuration_descriptor =
 	.interface = usb_cdcacm_interfaces, /**< pointer to an array of interfaces */
 };
 
-/**< device ID used as serial number */
+/** device ID used as serial number */
 static char usb_serial[] = "00112233445566778899aabb";
 
 /** USB string table
diff --git a/lib/usb_cdcacm.h b/lib/usb_cdcacm.h
index 0cc0fc9..767bb4e 100644
--- a/lib/usb_cdcacm.h
+++ b/lib/usb_cdcacm.h
@@ -13,9 +13,9 @@
  *
  */
 /** library for USB CDC ACM communication (API)
- *  @file usb_cdcacm.h
+ *  @file
  *  @author King Kévin <kingkevin@cuvoodoo.info>
- *  @date 2016
+ *  @date 2016-2019
  */
 #pragma once