diff --git a/scripts/Window_InputNumber.rb b/scripts/Window_InputNumber.rb
index 35bdf1c..0f58244 100644
--- a/scripts/Window_InputNumber.rb
+++ b/scripts/Window_InputNumber.rb
@@ -90,7 +90,7 @@ class Window_InputNumber < Window_Base
     self.contents.font.color = normal_color
     s = sprintf("%0*d", @digits_max, @number)
     if($game_switches[179] == true)
-      for i in 0...@digits_max
+      (0...@digits_max).each do |i|
         case i
         when 0
           self.contents.font.color = Window_Base.text_color(4)
@@ -104,7 +104,7 @@ class Window_InputNumber < Window_Base
         self.contents.draw_text(i * @cursor_width + 4, 0, 32, 32, s[i,1])
       end
     else
-      for i in 0...@digits_max
+      (0...@digits_max).each do |i|
         self.contents.draw_text(i * @cursor_width + 4, 0, 32, 32, s[i,1])
       end
     end
diff --git a/scripts/Window_Item.rb b/scripts/Window_Item.rb
index f499b8a..180f7aa 100644
--- a/scripts/Window_Item.rb
+++ b/scripts/Window_Item.rb
@@ -47,7 +47,7 @@ class Window_Item < Window_Selectable
     end
     @data = []
     # Add item
-    for i in 1...$data_items.size
+    (1...$data_items.size).each do |i|
       if $game_party.item_number(i) > 0
         @data.push($data_items[i])
       end
@@ -56,7 +56,7 @@ class Window_Item < Window_Selectable
     @item_max = @data.size
     if @item_max > 0
       self.contents = Bitmap.new(width - 32, row_max * 32)
-      for i in 0...@item_max
+      (0...@item_max).each do |i|
         draw_item(i)
       end
       self.index = 0 if self.index == -1
diff --git a/scripts/Window_MainMenu.rb b/scripts/Window_MainMenu.rb
index 1abd36c..7be7d56 100644
--- a/scripts/Window_MainMenu.rb
+++ b/scripts/Window_MainMenu.rb
@@ -30,7 +30,7 @@ class Window_MainMenu < Window_Selectable
     # Render menu
     self.contents = Bitmap.new(width - 32, 32)
     Language.register_text_sprite(self.class.name + "_contents", self.contents)
-    for i in 0...@item_max
+    (0...@item_max).each do |i|
       draw_item(i, normal_color)
     end
     self.z = 9998
@@ -74,7 +74,7 @@ class Window_MainMenu < Window_Selectable
   # Open/show the menu
   def open
     # redraw in case language has been updated
-    for i in 0...@item_max
+    (0...@item_max).each do |i|
       draw_item(i, normal_color)
     end
     self.opacity = 0
diff --git a/scripts/Window_NameEdit.rb b/scripts/Window_NameEdit.rb
index 1d5fcb4..1a26e4d 100644
--- a/scripts/Window_NameEdit.rb
+++ b/scripts/Window_NameEdit.rb
@@ -28,7 +28,7 @@ class Window_NameEdit < Window_Base
     # Fit name within maximum number of characters
     name_array = @name.split(//)[0...@max_char]
     @name = ""
-    for i in 0...name_array.size
+    (0...name_array.size).each do |i|
       @name += name_array[i]
     end
     @default_name = @name
@@ -66,7 +66,7 @@ class Window_NameEdit < Window_Base
       # Delete 1 text character
       name_array = @name.split(//)
       @name = ""
-      for i in 0...name_array.size-1
+      (0...name_array.size-1).each do |i|
         @name += name_array[i]
       end
       @index -= 1
@@ -81,7 +81,7 @@ class Window_NameEdit < Window_Base
     self.contents.clear
     # Draw name
     name_array = @name.split('')
-    for i in 0...@max_char
+    (0...@max_char).each do |i|
       c = name_array[i]
       if c == nil
         c = "_"
diff --git a/scripts/Window_Settings.rb b/scripts/Window_Settings.rb
index 94dddd7..a0edfa6 100644
--- a/scripts/Window_Settings.rb
+++ b/scripts/Window_Settings.rb
@@ -218,7 +218,7 @@ class Window_Settings
     # navigation
     if Input.wheel_y != 0
       if (Input::key_press?(Input::key_from_name("Left Shift")))
-        for _ in 0...Input.wheel_y.round.abs
+        (0...Input.wheel_y.round.abs).each do |_|
           Input.wheel_y.round > 0 ? @content.parameter_right : @content.parameter_left
         end
       else