diff --git a/src/lang/frisian.txt b/src/lang/frisian.txt
--- a/src/lang/frisian.txt
+++ b/src/lang/frisian.txt
@@ -376,10 +376,9 @@ STR_SCENEDIT_FILE_MENU_SEPARATOR        
 STR_SCENEDIT_FILE_MENU_QUIT                                     :Ofslute
 
 # Settings menu
-###length 14
+###length 15
 STR_SETTINGS_MENU_GAME_OPTIONS                                  :Spulopsjes
 STR_SETTINGS_MENU_CONFIG_SETTINGS_TREE                          :Ynstellings
-STR_SETTINGS_MENU_SCRIPT_SETTINGS                               :AI/Spulskriptynstellings
 STR_SETTINGS_MENU_NEWGRF_SETTINGS                               :NewGRF-ynstellings
 STR_SETTINGS_MENU_TRANSPARENCY_OPTIONS                          :Trochsichtigensopsjes
 STR_SETTINGS_MENU_TOWN_NAMES_DISPLAYED                          :Stêdsnammen sjen litte
@@ -1887,7 +1886,6 @@ STR_INTRO_HIGHSCORE                     
 STR_INTRO_CONFIG_SETTINGS_TREE                                  :{BLACK}Ynstellings
 STR_INTRO_NEWGRF_SETTINGS                                       :{BLACK}NewGRF ynstellings
 STR_INTRO_ONLINE_CONTENT                                        :{BLACK}Sikje online ynhâld
-STR_INTRO_SCRIPT_SETTINGS                                       :{BLACK}AI/Spulskriptynstellings
 STR_INTRO_QUIT                                                  :{BLACK}Ôfslute
 
 STR_INTRO_TOOLTIP_NEW_GAME                                      :{BLACK}Begjin in nei spul. Ctrl + klik slaat kaartynstelling oer
@@ -1907,7 +1905,6 @@ STR_INTRO_TOOLTIP_HIGHSCORE             
 STR_INTRO_TOOLTIP_CONFIG_SETTINGS_TREE                          :{BLACK}Ynstellings sjen litte
 STR_INTRO_TOOLTIP_NEWGRF_SETTINGS                               :{BLACK}Lit NewGRF ynstellings sjen
 STR_INTRO_TOOLTIP_ONLINE_CONTENT                                :{BLACK}Strún ynternet ôf om nije ynhâld del te heljen
-STR_INTRO_TOOLTIP_SCRIPT_SETTINGS                               :{BLACK}AI/Spulskriptynstellings sjen litte
 STR_INTRO_TOOLTIP_QUIT                                          :{BLACK}Slút 'OpenTTD' ôf
 
 
@@ -3858,7 +3855,6 @@ STR_ERROR_AI_NO_AI_FOUND                                        :Gjin geskikte kompjûterspiler fûn.{}Disse kompjûterspiler is in dummy en docht neat.{}Jo kinne kompjûterspilers delhelje fan 'Online Inhâld' ôf.
 STR_ERROR_AI_DEBUG_SERVER_ONLY                                  :{YELLOW}AI/Spulskript debugskerm is allinich beskikber foar de server
 
 # AI configuration window
-STR_AI_CONFIG_CAPTION                                           :{WHITE}AI/Spulskript konfiguraasje
 STR_AI_CONFIG_GAMELIST_TOOLTIP                                  :{BLACK}It spulskript dat yn it folgjende spul laden sil wurde
 STR_AI_CONFIG_AILIST_TOOLTIP                                    :{BLACK}AIs dy't yn it folgjende spul laden sille wurde
 STR_AI_CONFIG_HUMAN_PLAYER                                      :Minslike spiler
@@ -3873,8 +3869,6 @@ STR_AI_CONFIG_MOVE_DOWN                 
 STR_AI_CONFIG_GAMESCRIPT                                        :{SILVER}Spulskript
 STR_AI_CONFIG_AI                                                :{SILVER}AIs
 
-STR_AI_CONFIG_CHANGE                                            :{BLACK}Selektear {STRING}
-STR_AI_CONFIG_CHANGE_NONE                                       :
 STR_AI_CONFIG_CHANGE_AI                                         :AI
 STR_AI_CONFIG_CHANGE_GAMESCRIPT                                 :Spulskript
 STR_AI_CONFIG_CHANGE_TOOLTIP                                    :{BLACK}in oar script lade
@@ -3898,9 +3892,7 @@ STR_AI_LIST_CANCEL_TOOLTIP              
 
 
 # AI Parameters
-STR_AI_SETTINGS_CAPTION                                         :{WHITE}{STRING} Parameters
 STR_AI_SETTINGS_CAPTION_AI                                      :AI
-STR_AI_SETTINGS_CAPTION_GAMESCRIPT                              :Spulskript
 STR_AI_SETTINGS_CLOSE                                           :{BLACK}Slúte
 STR_AI_SETTINGS_RESET                                           :{BLACK}Weromsette
 STR_AI_SETTINGS_SETTING                                         :{STRING}: {ORANGE}{STRING}