diff --git a/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c b/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
index 156006326a..47b92f8324 100644
--- a/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
+++ b/src/modules/fw_pos_control_l1/fw_pos_control_l1_params.c
@@ -46,13 +46,13 @@
 /**
  * L1 period
  *
- * This is the L1 distance and defines the tracking
- * point ahead of the aircraft its following.
- * A value of 18-25 meters works for most aircraft. Shorten
+ * Used to determine the L1 gain and controller time constant. This parameter is
+ * proportional to the L1 distance (which points ahead of the aircraft on the path
+ * it is following). A value of 18-25 seconds works for most aircraft. Shorten
  * slowly during tuning until response is sharp without oscillation.
  *
- * @unit m
- * @min 12.0
+ * @unit s
+ * @min 7.0
  * @max 50.0
  * @decimal 1
  * @increment 0.5