diff --git a/libraries/AP_L1_Control/AP_L1_Control.cpp b/libraries/AP_L1_Control/AP_L1_Control.cpp
index 814f1c606b..98ef91e5e2 100644
--- a/libraries/AP_L1_Control/AP_L1_Control.cpp
+++ b/libraries/AP_L1_Control/AP_L1_Control.cpp
@@ -8,7 +8,7 @@ const AP_Param::GroupInfo AP_L1_Control::var_info[] = {
     // @Param: PERIOD
     // @DisplayName: L1 control period
     // @Description: Period in seconds of L1 tracking loop. This parameter is the primary control for agressiveness of turns in auto mode. This needs to be larger for less responsive airframes. The default of 20 is quite conservative, but for most RC aircraft will lead to reasonable flight. For smaller more agile aircraft a value closer to 15 is appropriate, or even as low as 10 for some very agile aircraft. When tuning, change this value in small increments, as a value that is much too small (say 5 or 10 below the right value) can lead to very radical turns, and a risk of stalling.
-    // @Units: seconds
+    // @Units: s
     // @Range: 1 60
     // @Increment: 1
     // @User: Standard
@@ -33,7 +33,7 @@ const AP_Param::GroupInfo AP_L1_Control::var_info[] = {
     // @Param: LIM_BANK
     // @DisplayName: Loiter Radius Bank Angle Limit
     // @Description: The sealevel bank angle limit for a continous loiter. (Used to calculate airframe loading limits at higher altitudes). Setting to 0, will instead just scale the loiter radius directly
-    // @Units: degrees
+    // @Units: deg
     // @Range: 0 89
     // @User: Advanced
     AP_GROUPINFO_FRAME("LIM_BANK",   3, AP_L1_Control, _loiter_bank_limit, 0.0f, AP_PARAM_FRAME_PLANE),