diff --git a/core/src/com/unciv/models/translations/TranslationFileWriter.kt b/core/src/com/unciv/models/translations/TranslationFileWriter.kt
index ab0896685d..aa46026d01 100644
--- a/core/src/com/unciv/models/translations/TranslationFileWriter.kt
+++ b/core/src/com/unciv/models/translations/TranslationFileWriter.kt
@@ -440,6 +440,7 @@ object TranslationFileWriter {
                 "link", "icon", "extraImage", "color",  // FormattedLine
                 "RuinReward.uniques", "TerrainType.name",
                 "CityStateType.friendBonusUniques", "CityStateType.allyBonusUniques",
+                "Era.citySound",
             )
 
             /** Specifies Enums where the name property _is_ translatable, by Class name */