diff --git a/src/lang/japanese.txt b/src/lang/japanese.txt
--- a/src/lang/japanese.txt
+++ b/src/lang/japanese.txt
@@ -2683,6 +2683,13 @@ STR_ABOUT_ORIGINAL_COPYRIGHT                                    :{BLACK}オリジナル版権{COPYRIGHT} 1995 Chris Sawyer All rights reserved
 STR_ABOUT_VERSION                                               :{BLACK}OpenTTD バージョン {REV}
 STR_ABOUT_COPYRIGHT_OPENTTD                                     :{BLACK}OpenTTD {COPYRIGHT} 2002-2018 The OpenTTD team
 
+# Framerate display window
+############ Leave those lines in this order!!
+############ End of leave-in-this-order
+############ Leave those lines in this order!!
+############ End of leave-in-this-order
+
+
 # Save/load game/scenario
 STR_SAVELOAD_SAVE_CAPTION                                       :{WHITE}ゲームを保存
 STR_SAVELOAD_LOAD_CAPTION                                       :{WHITE}ゲームを開く