diff --git a/src/lang/finnish.txt b/src/lang/finnish.txt
--- a/src/lang/finnish.txt
+++ b/src/lang/finnish.txt
@@ -343,7 +343,7 @@ STR_UNITS_FORCE_IMPERIAL                                        :{COMMA}x10³ lbf
 STR_UNITS_FORCE_METRIC                                          :{COMMA} tf
 STR_UNITS_FORCE_SI                                              :{COMMA} kN
 
-############ range for menu	starts
+############ range for menu starts
 STR_0154_OPERATING_PROFIT_GRAPH                                 :Liikevoitto
 STR_0155_INCOME_GRAPH                                           :Tulot
 STR_0156_DELIVERED_CARGO_GRAPH                                  :Kuljetettu rahti
@@ -352,7 +352,7 @@ STR_0158_COMPANY_VALUE_GRAPH                                    :Yhtiön arvo
 STR_0159_CARGO_PAYMENT_RATES                                    :Rahtimaksutaksat
 STR_015A_COMPANY_LEAGUE_TABLE                                   :Yhtiökilpataulukko
 STR_PERFORMANCE_DETAIL_MENU                                     :Suoritearviointi
-############ range for menu	ends
+############ range for menu ends
 
 STR_015B_OPENTTD                                                :{WHITE}Tietoa OpenTTD:stä
 STR_015C_SAVE_GAME                                              :Tallenna peli
@@ -489,7 +489,7 @@ STR_01A9_NONE                                                   :Ei mitään
 STR_01AA_NAME                                                   :{BLACK}Nimi
 STR_01AB                                                        :{BLACK}{TINYFONT}{STRING}
 
-############ range for days	starts
+############ range for days starts
 STR_01AC_1ST                                                    :1.
 STR_01AD_2ND                                                    :2.
 STR_01AE_3RD                                                    :3.
@@ -521,7 +521,7 @@ STR_01C7_28TH                           
 STR_01C8_29TH                                                   :29.
 STR_01C9_30TH                                                   :30.
 STR_01CA_31ST                                                   :31.
-############ range for days	ends
+############ range for days ends
 
 STR_01CB                                                        :{TINYFONT}{COMMA}
 
@@ -760,7 +760,7 @@ STR_02C1_VEHICLE_DESIGN_NAMES_SELECTION                         :{BLACK}Liikennevälineiden mallinimien valinta.
 STR_02C2_SAVE_CUSTOMIZED_VEHICLE                                :{BLACK}Tallenna omat liikennevälineiden mallien nimet levylle.
 
 STR_CHECKMARK                                                   :{CHECKMARK}
-############ range for menu	starts
+############ range for menu starts
 STR_02C3_GAME_OPTIONS                                           :Pelin asetukset
 STR_02C5_DIFFICULTY_SETTINGS                                    :Vaikeusasetukset
 STR_02C7_CONFIG_PATCHES                                         :Muokkaa paikkauksia
@@ -774,16 +774,16 @@ STR_02D0_FULL_ANIMATION                                         :{SETX 12}Täysi animointi
 STR_02D2_FULL_DETAIL                                            :{SETX 12}Kaikki yksityiskohdat
 STR_02D4_TRANSPARENT_BUILDINGS                                  :{SETX 12}Läpinäkyvät rakennukset
 STR_TRANSPARENT_SIGNS                                           :{SETX 12}Läpinäkyvät asemakyltit
-############ range ends	here
+############ range ends here
 
-############ range for menu	starts
+############ range for menu starts
 STR_02D5_LAND_BLOCK_INFO                                        :Maa-alueen tiedot
 STR_02D6                                                        :
 STR_CONSOLE_SETTING                                             :Konsoli
 STR_02D7_SCREENSHOT_CTRL_S                                      :Kuvakaappaus (Ctrl-S)
 STR_02D8_GIANT_SCREENSHOT_CTRL_G                                :Valtava kuvakaapp. (Ctrl-G)
 STR_02D9_ABOUT_OPENTTD                                          :Tietoja "OpenTTD":stä
-############ range ends	here
+############ range ends here
 
 STR_02DB_OFF                                                    :{BLACK}pois
 STR_02DA_ON                                                     :{BLACK}päällä
@@ -840,7 +840,7 @@ STR_0310_SELECT_SUB_TROPICAL_LANDSCAPE  
 STR_0311_SELECT_TOYLAND_LANDSCAPE                               :{BLACK}Valitse 'lelumaan' ilmasto.
 STR_0312_FUND_CONSTRUCTION_OF_NEW                               :{BLACK}Rahoita uuden teollisuuden rakentamista.
 
-############ range for menu	starts
+############ range for menu starts
 STR_INDUSTRY_DIR                                                :Teollisuushakemisto
 STR_0313_FUND_NEW_INDUSTRY                                      :Rakenna uutta teollisuutta
 ############ range ends here
@@ -886,7 +886,7 @@ STR_TOWNNAME_DANISH                     
 STR_TOWNNAME_TURKISH                                            :turkkilainen
 STR_TOWNNAME_ITALIAN                                            :Italialainen
 STR_TOWNNAME_CATALAN                                            :Katalonialainen
-############ end of	townname region
+############ end of townname region
 
 STR_CURR_GBP                                                    :Punta (£)
 STR_CURR_USD                                                    :Dollari ($)
@@ -1850,11 +1850,11 @@ STR_4824_BUBBLE_GENERATOR               
 STR_4825_TOFFEE_QUARRY                                          :Toffeelouhos
 STR_4826_SUGAR_MINE                                             :Sokerikaivos
 
-############ range for requires	starts
+############ range for requires starts
 STR_4827_REQUIRES                                               :{BLACK}Tarvitsee: {YELLOW}{STRING}
 STR_4828_REQUIRES                                               :{BLACK}Tarvitsee: {YELLOW}{STRING}, {STRING}
 STR_4829_REQUIRES                                               :{BLACK}Tarvitsee: {YELLOW}{STRING}, {STRING}, {STRING}
-############ range for requires	ends
+############ range for requires ends
 
 STR_482A_PRODUCTION_LAST_MONTH                                  :{BLACK}Tuotto viime kuussa:
 STR_482B_TRANSPORTED                                            :{YELLOW}{CARGO}{BLACK} ({COMMA}{NBSP}% kuljetettu)
@@ -1927,8 +1927,8 @@ STR_5806_CAN_T_PURCHASE_THIS_LAND       
 STR_5807_YOU_ALREADY_OWN_IT                                     :{WHITE}...omistat sen jo!
 
 
-############ WARNING, using	range 0x6000 for strings that are stored in	the	savegame
-############ These strings may never get a new id, or savegames	will break!
+############ WARNING, using range 0x6000 for strings that are stored in the savegame
+############ These strings may never get a new id, or savegames will break!
 ##id 0x6000
 STR_SV_EMPTY                                                    :
 STR_SV_UNNAMED                                                  :Nimetön
@@ -1971,7 +1971,7 @@ STR_SV_STNAME_LOWER                     
 STR_SV_STNAME_HELIPORT                                          :{STRING}, helikopterikenttä
 STR_SV_STNAME_FOREST                                            :{STRING}, metsä
 
-############ end of	savegame specific region!
+############ end of savegame specific region!
 
 ##id 0x6800
 STR_6800_DIFFICULTY_LEVEL                                       :{WHITE}Vaikeusaste