diff --git a/src/lang/polish.txt b/src/lang/polish.txt
--- a/src/lang/polish.txt
+++ b/src/lang/polish.txt
@@ -2780,6 +2780,7 @@ STR_NEWGRF_SETTINGS_FIND_MISSING_CONTENT_TOOLTIP                :{BLACK}Sprawdź czy zagubiony dodatek może być znaleziony online
 STR_NEWGRF_SETTINGS_FILENAME                                    :{BLACK}Nazwa pliku: {SILVER}{STRING}
 STR_NEWGRF_SETTINGS_GRF_ID                                      :{BLACK}GRF ID: {SILVER}{STRING}
 STR_NEWGRF_SETTINGS_VERSION                                     :{BLACK}Wersja: {SILVER}{NUM}
+STR_NEWGRF_SETTINGS_MIN_VERSION                                 :{BLACK}Kompatybilność z wersją min.: {SILVER}{NUM}
 STR_NEWGRF_SETTINGS_MD5SUM                                      :{BLACK}suma MD5: {SILVER}{STRING}
 STR_NEWGRF_SETTINGS_PALETTE                                     :{BLACK}Paleta: {SILVER}{STRING}
 STR_NEWGRF_SETTINGS_PARAMETER                                   :{BLACK}Parametry: {SILVER}{STRING}