diff --git a/src/lang/japanese.txt b/src/lang/japanese.txt
--- a/src/lang/japanese.txt
+++ b/src/lang/japanese.txt
@@ -325,6 +325,8 @@ STR_SORT_BY_AVERAGE_PROFIT_THIS_YEAR                            :今年の平均利益
 STR_GROUP_BY_NONE                                               :(なし)
 STR_GROUP_BY_SHARED_ORDERS                                      :共有注文
 
+# Order button in shared orders vehicle list
+
 # Tooltips for the main toolbar
 ###length 31
 STR_TOOLBAR_TOOLTIP_PAUSE_GAME                                  :{BLACK}ゲームをポーズします