diff --git a/parts/language/manual_en.lua b/parts/language/manual_en.txt
similarity index 99%
rename from parts/language/manual_en.lua
rename to parts/language/manual_en.txt
index 38b87005..82e52d5b 100644
--- a/parts/language/manual_en.lua
+++ b/parts/language/manual_en.txt
@@ -1,4 +1,3 @@
-return STRING.split([=[
 Gameplay:
         The system will provide you with tetrominoes (4-block pieces),
         with a total of 7 types, and the player needs to control them
@@ -89,4 +88,3 @@ Custom mode:
                 regular colored cells have to be made of the corresponding block;
                 garbage-colored cells can be any block but not air.
     Once you make the shape, you will win.
-]=],"\n")
diff --git a/parts/language/manual_zh.lua b/parts/language/manual_zh.txt
similarity index 99%
rename from parts/language/manual_zh.lua
rename to parts/language/manual_zh.txt
index 9fc0870f..61260213 100644
--- a/parts/language/manual_zh.lua
+++ b/parts/language/manual_zh.txt
@@ -1,4 +1,3 @@
-return STRING.split([=[
 游戏方法:
         系统会提供的一个个四连骨牌("方块",总共7种)
         玩家需要控制(左右移动和旋转90,180,270度)这些骨牌直到下落到场地底部,锁定
@@ -73,4 +72,3 @@ back to back(B2B)点数说明:
                 普通的七种彩色方块必须颜色对应;
                 垃圾行方块的位置只要有方块就可以,但是不能是空气.
         玩家拼出画的图后就会判定胜利.
-]=],"\n")
diff --git a/parts/scenes/legals.lua b/parts/scenes/legals.lua
index 106a96f3..4e61408e 100644
--- a/parts/scenes/legals.lua
+++ b/parts/scenes/legals.lua
@@ -1,7 +1,12 @@
 local scene={}
 function scene.sceneInit()
     BG.set('cubes')
-    WIDGET.active.texts:setTexts(STRING.split(love.filesystem.read("legals.md"),'\n'))
+    local fileData=love.filesystem.read("legals.md")
+    if fileData then
+        WIDGET.active.texts:setTexts(STRING.split(fileData,'\n'))
+    else
+        WIDGET.active.texts:setTexts{"[legals.md not found]"}
+    end
 end
 
 function scene.wheelMoved(_,y)
diff --git a/parts/scenes/manual.lua b/parts/scenes/manual.lua
index 140df538..10b70bcf 100644
--- a/parts/scenes/manual.lua
+++ b/parts/scenes/manual.lua
@@ -2,7 +2,13 @@ local scene={}
 
 function scene.sceneInit()
     BG.set('cubes')
-    WIDGET.active.texts:setTexts(require("parts.language.manual_"..(SETTING.locale:find'zh'and'zh'or'en')))
+    local fileData=love.filesystem.read('parts/language/manual_'..(SETTING.locale:find'zh'and'zh'or'en')..'.txt')
+    if fileData then
+        WIDGET.active.texts:setTexts(STRING.split(fileData,'\n'))
+    else
+        WIDGET.active.texts:setTexts{"[manual file not found]"}
+    end
+
 end
 
 function scene.wheelMoved(_,y)