diff --git a/data/scene.lua b/data/scene.lua
index 95a3cec..fdb5f07 100644
--- a/data/scene.lua
+++ b/data/scene.lua
@@ -3,6 +3,7 @@ scene={
     pos=0,
 
     start=function(script)
+        if scene.script~=nil then return end
         scene.pos=0
         scene.script=script
         scene.cont()