diff --git a/doc/en/scripting/user-input.md b/doc/en/scripting/user-input.md
index 402f9e67..ff9d8cbd 100644
--- a/doc/en/scripting/user-input.md
+++ b/doc/en/scripting/user-input.md
@@ -42,12 +42,21 @@ input.add_callback(bindname: str, callback: function)
 ```
 
 Add binding activation callback. Example:
+
 ```lua
 input.add_callback("hud.inventory", function ()
 	print("Inventory open key pressed")
 end)
 ```
 
+Callback may be added to a key.
+
+```lua
+input.add_callback("key:space", function ()
+    print("Space pressed")
+end)
+```
+
 ```python
 input.get_mouse_pos() -> {int, int}
 ```
diff --git a/doc/ru/scripting/user-input.md b/doc/ru/scripting/user-input.md
index 686d962b..bf80f5c9 100644
--- a/doc/ru/scripting/user-input.md
+++ b/doc/ru/scripting/user-input.md
@@ -40,12 +40,21 @@ input.add_callback(bindname: str, callback: function)
 ```
 
 Назначает функцию, которая будет вызываться при активации привязки. Пример:
+
 ```lua
 input.add_callback("hud.inventory", function ()
 	print("Inventory open key pressed")
 end)
 ```
 
+Можно назначить функцию на нажатие клавиши.
+
+```lua
+input.add_callback("key:space", function ()
+    print("Space pressed")
+end)
+```
+
 ```python
 input.get_mouse_pos() -> {int, int}
 ```