diff --git a/jspwiki-war/src/main/java/org/apache/wiki/util/MailUtil.java b/jspwiki-war/src/main/java/org/apache/wiki/util/MailUtil.java
index 7b209f0..d03681e 100644
--- a/jspwiki-war/src/main/java/org/apache/wiki/util/MailUtil.java
+++ b/jspwiki-war/src/main/java/org/apache/wiki/util/MailUtil.java
@@ -279,7 +279,7 @@
             MimeMessage msg = new MimeMessage(session);
             msg.setFrom(new InternetAddress(c_fromAddress));
             msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to, false));
-            msg.setSubject(subject);
+            msg.setSubject(subject, "UTF-8");
             msg.setText(content, "UTF-8");
             msg.setSentDate(new Date());