diff --git a/lib/repo/ch/autumo/beetroot/autumo-beetroot/3.1.2/autumo-beetroot-3.1.2.jar b/lib/repo/ch/autumo/beetroot/autumo-beetroot/3.1.2/autumo-beetroot-3.1.2.jar
index bb194db7..a973f616 100644
Binary files a/lib/repo/ch/autumo/beetroot/autumo-beetroot/3.1.2/autumo-beetroot-3.1.2.jar and b/lib/repo/ch/autumo/beetroot/autumo-beetroot/3.1.2/autumo-beetroot-3.1.2.jar differ
diff --git a/src/main/java/ch/autumo/beetroot/mailing/Mailer.java b/src/main/java/ch/autumo/beetroot/mailing/Mailer.java
index 515bb498..a559ade1 100644
--- a/src/main/java/ch/autumo/beetroot/mailing/Mailer.java
+++ b/src/main/java/ch/autumo/beetroot/mailing/Mailer.java
@@ -39,7 +39,7 @@ public interface Mailer {
 	 * @param subject subject
 	 * @param variables variables to parse in templates
 	 * @param templateName template name
-	 * @param session HTTP session or null if not called within a servlet context
+	 * @param session HTTP session or null if not called within a servlet context (default language used)
 	 * @throws Exception exception
 	 */
 	public void mail(String to[], String subject, Map<String, String> variables, String templateName, BeetRootHTTPSession session) throws Exception;