diff --git a/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/common/SailingLocales.gwt.xml b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/common/SailingLocales.gwt.xml
index d0adb9336a9..b7e30a3a28e 100644
--- a/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/common/SailingLocales.gwt.xml
+++ b/java/com.sap.sailing.gwt.ui/src/main/java/com/sap/sailing/gwt/common/SailingLocales.gwt.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.7.0//EN" "http://gwtproject.org/doctype/2.7.0/gwt-module.dtd">
 <module>
-	<extend-property name="locale" values="en,de,zh,ru" />
-	<set-property name="locale" value="en,de,zh,ru" />
+	<extend-property name="locale" values="en,de,zh,ru,ja" />
+	<set-property name="locale" value="en,de,zh,ru,ja" />
 	<set-property-fallback name="locale" value="en" />
 </module>