diff --git a/Zframework/background.lua b/Zframework/background.lua
index acfe88c3..c9b865ba 100644
--- a/Zframework/background.lua
+++ b/Zframework/background.lua
@@ -7,7 +7,7 @@ local BGlist={
 }
 local BG={
 	cur="none",
-	defaultBG="none",
+	default="none",
 	init=false,
 	resize=false,
 	update=NULL,
@@ -24,12 +24,12 @@ function BG.send(...)
 		BG.event(...)
 	end
 end
-function BG.setDefaultBG(bg)
-	defaultBG=bg
+function BG.setDefault(bg)
+	BG.default=bg
 end
 function BG.set(background)
 	if not background then
-		background=defaultBG
+		background=BG.default
 	end
 	if background==BG.cur or not SETTING.bg then return end
 	BG.discard()
diff --git a/main.lua b/main.lua
index 403cbaf0..2989cf7a 100644
--- a/main.lua
+++ b/main.lua
@@ -353,4 +353,4 @@ do
 	end
 end
 
-BG.setDefaultBG(FESTIVAL=="Xmas"and"snow"or"space")
\ No newline at end of file
+BG.setDefault(FESTIVAL=="Xmas"and"snow"or"space")
diff --git a/parts/scenes/main.lua b/parts/scenes/main.lua
index 6c1bec50..39a94e79 100644
--- a/parts/scenes/main.lua
+++ b/parts/scenes/main.lua
@@ -45,10 +45,7 @@ local tip
 
 function scene.sceneInit()
 	tip=text.getTip()
-	BG.set(
-		FESTIVAL=="Xmas"and"snow"or
-		"space"
-	)
+	BG.set()
 
 	GAME.modeEnv=NONE
 	--Create demo player