diff --git a/ExpCore/gui.lua b/ExpCore/gui.lua
index 5f909ba7..9314a097 100644
--- a/ExpCore/gui.lua
+++ b/ExpCore/gui.lua
@@ -25,4 +25,10 @@ function Gui:_load_parts(parts)
     end
 end
 
+Event.register(defines.events.on_tick, function(event)
+	if (event.tick/(3600*game.speed)) % 15 == 0 then
+		Gui.left.update()
+	end
+end)
+
 return Gui
\ No newline at end of file