diff --git a/parts/gametoolfunc.lua b/parts/gametoolfunc.lua
index c8108d37..44f3b301 100644
--- a/parts/gametoolfunc.lua
+++ b/parts/gametoolfunc.lua
@@ -500,6 +500,17 @@ function legalGameTime()--Check if today's playtime is legal
 	end
 	return true
 end
+function legalEmail(e)
+	e=SPLITSTR(e,"@")
+	if #e~=2 then return false end
+	if e[1]:sub(-1)=="."or e[2]:sub(-1)=="."then return false end
+	local e1,e2=SPLITSTR(e[1],"."),SPLITSTR(e[2],".")
+	if #e1*#e2==0 then return false end
+	for _,v in next,e1 do if #v==0 then return false end end
+	for _,v in next,e2 do if #v==0 then return false end end
+	return true
+end
+
 function mergeStat(stat,delta)--Merge delta stat. to global stat.
 	for k,v in next,delta do
 		if type(v)=="table"then
diff --git a/parts/scenes/login.lua b/parts/scenes/login.lua
index c5ff15d8..6d2d0dd2 100644
--- a/parts/scenes/login.lua
+++ b/parts/scenes/login.lua
@@ -1,7 +1,7 @@
 local function login()
 	local email=	WIDGET.active.email.value
 	local password=	WIDGET.active.password.value
-	if #email==0 or not email:match("^[a-zA-Z0-9_]+@[a-zA-Z0-9_-]+%.[a-zA-Z0-9_]+$")then
+	if not legalEmail(email)then
 		LOG.print(text.wrongEmail)return
 	elseif #password==0 then
 		LOG.print(text.noPassword)return
@@ -14,7 +14,7 @@ local scene={}
 scene.widgetList={
 	WIDGET.newText{name="title",		x=80,	y=50,font=70,align="L"},
 	WIDGET.newButton{name="register",	x=1140,	y=100,w=170,h=80,color="lY",code=function()SCN.swapTo("register","swipeR")end},
-	WIDGET.newInputBox{name="email",	x=380,	y=200,w=500,h=60,regex="[0-9A-Za-z@._-]"},
+	WIDGET.newInputBox{name="email",	x=380,	y=200,w=500,h=60},
 	WIDGET.newInputBox{name="password",	x=380,	y=300,w=626,h=60,secret=true,regex="[ -~]"},
 	WIDGET.newKey{name="login",			x=1140,	y=540,w=170,h=80,font=40,code=login},
 	WIDGET.newButton{name="back",		x=1140,	y=640,w=170,h=80,font=40,code=backScene},
diff --git a/parts/scenes/register.lua b/parts/scenes/register.lua
index 8be9bf1c..1a6f0007 100644
--- a/parts/scenes/register.lua
+++ b/parts/scenes/register.lua
@@ -1,16 +1,5 @@
 local scene={}
 
-local function legalEmail(e)
-	e=SPLITSTR(e,"@")
-	if #e~=2 then return false end
-	if e[1]:sub(-1)=="."or e[2]:sub(-1)=="."then return false end
-	local e1,e2=SPLITSTR(e[1],"."),SPLITSTR(e[2],".")
-	if #e1*#e2==0 then return false end
-	for _,v in next,e1 do if #v==0 then return false end end
-	for _,v in next,e2 do if #v==0 then return false end end
-	return true
-end
-
 local function register()
 	local username=	WIDGET.active.username.value
 	local email=	WIDGET.active.email.value
@@ -32,7 +21,7 @@ scene.widgetList={
 	WIDGET.newText{name="title",		x=80,	y=50,font=70,align="L"},
 	WIDGET.newButton{name="login",		x=1140,	y=100,w=170,h=80,color="lY",code=function()SCN.swapTo("login","swipeL")end},
 	WIDGET.newInputBox{name="username",	x=380,	y=200,w=500,h=60,regex="[0-9A-Za-z_]"},
-	WIDGET.newInputBox{name="email",	x=380,	y=300,w=626,h=60,regex="[0-9A-Za-z@._-]"},
+	WIDGET.newInputBox{name="email",	x=380,	y=300,w=626,h=60},
 	WIDGET.newInputBox{name="password",	x=380,	y=400,w=626,h=60,secret=true,regex="[ -~]"},
 	WIDGET.newInputBox{name="password2",x=380,	y=500,w=626,h=60,secret=true,regex="[ -~]"},
 	WIDGET.newKey{name="register",		x=1140,	y=540,w=170,h=80,font=40,code=register},