diff --git a/docs/api/system.lua b/docs/api/system.lua
index 17c379fa..ffbc6f42 100644
--- a/docs/api/system.lua
+++ b/docs/api/system.lua
@@ -107,10 +107,12 @@ function system.set_window_bordered(bordered) end
 ---When then window is run borderless (without system decorations), this
 ---function allows to set the size of the different regions that allow
 ---for custom window management.
+---To disable custom window management, call this function without any
+---arguments
 ---
----@param title_height number
----@param controls_width number Width of window controls (maximize,minimize and close buttons, etc).
----@param resize_border number The amount of pixels reserved for resizing
+---@param title_height? number Height of the window decoration
+---@param controls_width? number Width of window controls (maximize,minimize and close buttons, etc).
+---@param resize_border? number The amount of pixels reserved for resizing
 function system.set_window_hit_test(title_height, controls_width, resize_border) end
 
 ---