diff --git a/gamecore/modules/menusystem/widgets/init.lua b/gamecore/modules/menusystem/widgets/init.lua
index 92b22eb..9c02e5a 100644
--- a/gamecore/modules/menusystem/widgets/init.lua
+++ b/gamecore/modules/menusystem/widgets/init.lua
@@ -66,6 +66,10 @@ function BaseWidget:redrawCanvas()
   imageData:release( )
 end
 
+function BaseWidget:invalidateCanvas()
+  self.canvas.needRedraw = true
+end
+
 function BaseWidget:drawCanvas()
   self.r = love.math.random(128)/256
   self.g = love.math.random(128)/256