diff --git a/arduino-ide-extension/src/node/i18n/arduino-localization-contribution.ts b/arduino-ide-extension/src/node/i18n/arduino-localization-contribution.ts
index 224d073bf..a10842126 100644
--- a/arduino-ide-extension/src/node/i18n/arduino-localization-contribution.ts
+++ b/arduino-ide-extension/src/node/i18n/arduino-localization-contribution.ts
@@ -43,8 +43,8 @@ export class ArduinoLocalizationContribution
     nl: nlJson,
     pl: plJson,
     'pt-br': ptJson,
-    ru: [ruJson],
-    tr: [trJson],
+    ru: ruJson,
+    tr: trJson,
     uk: ukJson,
     'zh-cn': zhJson,
     'zh-tw': zh_HantJson,