diff --git a/application/src/main/data/upgrade/3.4.0/schema_update.sql b/application/src/main/data/upgrade/3.4.0/schema_update.sql
index 12a86acebc..71588d88ac 100644
--- a/application/src/main/data/upgrade/3.4.0/schema_update.sql
+++ b/application/src/main/data/upgrade/3.4.0/schema_update.sql
@@ -228,3 +228,7 @@ BEGIN
     ON CONFLICT DO NOTHING;
 END
 $$;
+
+UPDATE tb_user
+    SET additional_info = REPLACE(additional_info, '"lang":"ja_JA"', '"lang":"ja_JP"')
+    WHERE additional_info LIKE '%"lang":"ja_JA"%';
diff --git a/ui-ngx/src/assets/locale/locale.constant-en_US.json b/ui-ngx/src/assets/locale/locale.constant-en_US.json
index 475455319b..b95cd36e08 100644
--- a/ui-ngx/src/assets/locale/locale.constant-en_US.json
+++ b/ui-ngx/src/assets/locale/locale.constant-en_US.json
@@ -4632,7 +4632,7 @@
             "ko_KR": "한국어",
             "ru_RU": "Русский",
             "es_ES": "Español",
-            "ja_JA": "日本語",
+            "ja_JP": "日本語",
             "tr_TR": "Türkçe",
             "fa_IR": "فارسي",
             "uk_UA": "Українська",
diff --git a/ui-ngx/src/assets/locale/locale.constant-ja_JA.json b/ui-ngx/src/assets/locale/locale.constant-ja_JP.json
similarity index 100%
rename from ui-ngx/src/assets/locale/locale.constant-ja_JA.json
rename to ui-ngx/src/assets/locale/locale.constant-ja_JP.json