diff --git a/src/modules/navigator/rcloss_params.c b/src/modules/navigator/rcloss_params.c
index 10adaf71ff..3e14a0b011 100644
--- a/src/modules/navigator/rcloss_params.c
+++ b/src/modules/navigator/rcloss_params.c
@@ -51,6 +51,8 @@
  *
  * @unit s
  * @min -1.0
+ * @decimal 1
+ * @increment 0.1
  * @group Radio Signal Loss
  */
 PARAM_DEFINE_FLOAT(NAV_RCL_LT, 120.0f);
diff --git a/src/modules/navigator/rtl_params.c b/src/modules/navigator/rtl_params.c
index d970af41aa..ea9bb1c1ad 100644
--- a/src/modules/navigator/rtl_params.c
+++ b/src/modules/navigator/rtl_params.c
@@ -1,6 +1,6 @@
 /****************************************************************************
  *
- *   Copyright (c) 2014 PX4 Development Team. All rights reserved.
+ *   Copyright (c) 2014-2016 PX4 Development Team. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -83,7 +83,7 @@ PARAM_DEFINE_FLOAT(RTL_DESCEND_ALT, 30);
  * @min -1
  * @max 300
  * @decimal 1
- * @increment 1
+ * @increment 0.5
  * @group Return To Land
  */
 PARAM_DEFINE_FLOAT(RTL_LAND_DELAY, -1.0f);