diff --git a/lib/reline/windows.rb b/lib/reline/windows.rb
index 8f620685a2..8d1d4da633 100644
--- a/lib/reline/windows.rb
+++ b/lib/reline/windows.rb
@@ -323,7 +323,7 @@ def self.move_cursor_down(val)
   end
 
   def self.erase_after_cursor
-    csbi = 0.chr * 24
+    csbi = 0.chr * 22
     @@GetConsoleScreenBufferInfo.call(@@hConsoleHandle, csbi)
     attributes = csbi[8, 2].unpack1('S')
     cursor = csbi[4, 4].unpack1('L')