diff --git a/code/keybind.lua b/code/keybind.lua
index 3c4105f..d3248b3 100644
--- a/code/keybind.lua
+++ b/code/keybind.lua
@@ -17,6 +17,10 @@ Keybind.debug = {}
 Keybind.editor = {}
 Keybind.generic = {}
 
+function Keybind:isAvailable(action)
+	return not action.occupied
+end
+
 function Keybind:checkDown(action)
 	if DemoPlayback then
 		for _, demo_action in pairs(DemoAction[CurrentDemoFrame]) do
@@ -37,9 +41,11 @@ function Keybind:checkDown(action)
 				if action.demo ~= nil then
 					Demo:recordAction(action.demo)
 				end
+				action.occupied = true
 				return true
 			end
 		end
+		action.occupied = false
 		return false
 	end
 end