diff --git a/src/modules/systemlib/system_params.c b/src/modules/systemlib/system_params.c
index 347d416bf4..8e85aca3ff 100644
--- a/src/modules/systemlib/system_params.c
+++ b/src/modules/systemlib/system_params.c
@@ -89,6 +89,10 @@ PARAM_DEFINE_INT32(SYS_RESTART_TYPE, 2);
 * 921600: enables onboard mode at 921600 baud, 8N1. 57600: enables onboard mode at 57600 baud, 8N1.
 * 157600: enables OSD mode at 57600 baud, 8N1.
 *
+* @value 921600 Companion Link (921600 baud, 8N1)
+* @value 57600 Companion Link (57600 baud, 8N1)
+* @value 157600 OSD (57600 baud, 8N1)
+*
 * @min 0
 * @max 921600
 * @group System