diff --git a/parts/backgrounds/badapple.lua b/parts/backgrounds/badapple.lua
index d8cb430c..60cd77f0 100644
--- a/parts/backgrounds/badapple.lua
+++ b/parts/backgrounds/badapple.lua
@@ -1,5 +1,6 @@
 --Bad Apple!! (128x96, 10fps, 2192f)
 local gc=love.graphics
+local rectangle=gc.rectangle
 local int=math.floor
 local back={}
 
@@ -43,7 +44,7 @@ function back.draw()
 		for j=7,0,-1 do
 			local p=8*i+j
 			if bAnd(B,1)==0 then
-				gc.rectangle("fill",p%128,int(p/128),1,1)
+				rectangle("fill",p%128,int(p/128),1,1)
 			end
 			B=bRshift(B,1)
 		end
@@ -51,6 +52,6 @@ function back.draw()
 	gc.pop()
 end
 function back.discard()
-	video=false
+	video=nil
 end
 return back
\ No newline at end of file
diff --git a/parts/backgrounds/fan.lua b/parts/backgrounds/fan.lua
index d85638ba..3d9d32c3 100644
--- a/parts/backgrounds/fan.lua
+++ b/parts/backgrounds/fan.lua
@@ -1,5 +1,6 @@
 --UUZ's fan
 local gc=love.graphics
+local polygon,ellipse=gc.polygon,gc.ellipse
 local rnd=math.random
 local max,min,sin=math.max,math.min,math.sin
 local ins,rem=table.insert,table.remove
@@ -57,7 +58,7 @@ function back.draw()
 	gc.setLineWidth(6)
 	gc.setColor(.55,.5,.6)
 	for i=1,8 do
-		gc.polygon("line",fan[i])
+		polygon("line",fan[i])
 	end
 
 	gc.setLineWidth(2)
@@ -65,11 +66,11 @@ function back.draw()
 	gc.origin()
 	for i=1,#petal do
 		local P=petal[i]
-		gc.ellipse("fill",P.x,P.y,P.rx,P.ry)
+		ellipse("fill",P.x,P.y,P.rx,P.ry)
 	end
 	gc.pop()
 end
 function back.discard()
-	petal=false
+	petal=nil
 end
 return back
\ No newline at end of file
diff --git a/parts/backgrounds/snow.lua b/parts/backgrounds/snow.lua
index f0b4d51e..bda44f09 100644
--- a/parts/backgrounds/snow.lua
+++ b/parts/backgrounds/snow.lua
@@ -1,5 +1,6 @@
 --Snow
 local gc=love.graphics
+local ellipse=gc.ellipse
 local rnd=math.random
 local max,min=math.max,math.min
 local ins,rem=table.insert,table.remove
@@ -44,11 +45,11 @@ function back.draw()
 	gc.origin()
 	for i=1,#snow do
 		local P=snow[i]
-		gc.ellipse("fill",P.x,P.y,P.rx,P.ry)
+		ellipse("fill",P.x,P.y,P.rx,P.ry)
 	end
 	gc.pop()
 end
 function back.discard()
-	snow=false
+	snow=nil
 end
 return back
\ No newline at end of file
diff --git a/parts/backgrounds/space.lua b/parts/backgrounds/space.lua
index 2599828c..07df6603 100644
--- a/parts/backgrounds/space.lua
+++ b/parts/backgrounds/space.lua
@@ -1,5 +1,6 @@
 --Space with stars
 local gc=love.graphics
+local rectangle=gc.rectangle
 local rnd=math.random
 local back={}
 
@@ -35,14 +36,11 @@ function back.draw()
 	gc.translate(-10,-10)
 	gc.setColor(.8,.8,.8)
 	for i=1,1260,5 do
-		local s=stars
-		local x,y=s[i+1],s[i+2]
-		s=s[i]
-		gc.rectangle("fill",x,y,s,s)
+		rectangle("fill",stars[i+1],stars[i+2],stars[i],stars[i])
 	end
 	gc.translate(10,10)
 end
 function back.discard()
-	stars=false
+	stars=nil
 end
 return back
\ No newline at end of file
diff --git a/parts/backgrounds/tunnel.lua b/parts/backgrounds/tunnel.lua
index 59ef4dc8..c9f9e55a 100644
--- a/parts/backgrounds/tunnel.lua
+++ b/parts/backgrounds/tunnel.lua
@@ -38,6 +38,6 @@ function back.draw()
 	end
 end
 function back.discard()
-	ring=false
+	ring=nil
 end
 return back
\ No newline at end of file
diff --git a/parts/backgrounds/wing.lua b/parts/backgrounds/wing.lua
index a70ff948..28be42fe 100644
--- a/parts/backgrounds/wing.lua
+++ b/parts/backgrounds/wing.lua
@@ -68,6 +68,6 @@ function back.event(level)
 	end
 end
 function back.discard()
-	bar,crystal=false,false
+	bar,crystal=nil
 end
 return back
\ No newline at end of file