diff --git a/libraries/AC_Avoidance/AC_Avoid.cpp b/libraries/AC_Avoidance/AC_Avoid.cpp
index 756cc4b2e5..6248921115 100644
--- a/libraries/AC_Avoidance/AC_Avoid.cpp
+++ b/libraries/AC_Avoidance/AC_Avoid.cpp
@@ -45,6 +45,7 @@ const AP_Param::GroupInfo AC_Avoid::var_info[] = {
     // @DisplayName: Avoidance max lean angle in non-GPS flight modes
     // @Description: Max lean angle used to avoid obstacles while in non-GPS modes
     // @Units: cdeg
+    // @Increment: 10
     // @Range: 0 4500
     // @User: Standard
     AP_GROUPINFO_FRAME("ANGLE_MAX", 2,  AC_Avoid, _angle_max, 1000, AP_PARAM_FRAME_COPTER | AP_PARAM_FRAME_HELI | AP_PARAM_FRAME_TRICOPTER),