diff --git a/src/lang/french.txt b/src/lang/french.txt
index 4efbe83b31..2c025c586e 100644
--- a/src/lang/french.txt
+++ b/src/lang/french.txt
@@ -1808,6 +1808,7 @@ STR_INTRO_TRANSLATION                                           :{BLACK}Il manqu
 
 # Quit window
 STR_QUIT_CAPTION                                                :{WHITE}Quitter
+STR_QUIT_ARE_YOU_SURE_YOU_WANT_TO_EXIT_OPENTTD                  :{YELLOW}Êtes-vous sûr de vouloir quitter OpenTTD{NBSP}?
 STR_QUIT_YES                                                    :{BLACK}Oui
 STR_QUIT_NO                                                     :{BLACK}Non
 
diff --git a/src/lang/korean.txt b/src/lang/korean.txt
index e4236da6d7..aaee99eae3 100644
--- a/src/lang/korean.txt
+++ b/src/lang/korean.txt
@@ -1808,6 +1808,7 @@ STR_INTRO_TRANSLATION                                           :{BLACK}이 버
 
 # Quit window
 STR_QUIT_CAPTION                                                :{WHITE}종료
+STR_QUIT_ARE_YOU_SURE_YOU_WANT_TO_EXIT_OPENTTD                  :{YELLOW}정말 게임을 종료하시겠습니까?
 STR_QUIT_YES                                                    :{BLACK}예
 STR_QUIT_NO                                                     :{BLACK}아니요