diff --git a/lib/reline/windows.rb b/lib/reline/windows.rb
index 7ba28adb5a..b64ea97295 100644
--- a/lib/reline/windows.rb
+++ b/lib/reline/windows.rb
@@ -150,12 +150,12 @@ class Reline::Windows
     @@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi)
     cursor = csbi[4, 4].unpack('L').first
     written = 0.chr * 4
-    @@FillConsoleOutputCharacter.call(@@hConsoleHandle, 0x20, get_screen_size.first - cursor_pos.x, cursor, written)
+    @@FillConsoleOutputCharacter.call(@@hConsoleHandle, 0x20, get_screen_size.last - cursor_pos.x, cursor, written)
   end
 
   def self.scroll_down(val)
     return if val.zero?
-    scroll_rectangle = [0, val, get_screen_size.last, get_screen_size.first].pack('s4')
+    scroll_rectangle = [0, val, get_screen_size.first, get_screen_size.last].pack('s4')
     destination_origin = 0 # y * 65536 + x
     fill = [' '.ord, 0].pack('SS')
     @@ScrollConsoleScreenBuffer.call(@@hConsoleHandle, scroll_rectangle, nil, destination_origin, fill)