diff --git a/mod/forum/config.html b/mod/forum/config.html
index d43787360bd..e5933f9b302 100644
--- a/mod/forum/config.html
+++ b/mod/forum/config.html
@@ -1,5 +1,5 @@
 <form method="post" action="module.php" name="form">
-<input type="hidden" name="sesskey" value="<?php echo $USER->sesskey ?>">
+<input type="hidden" name="sesskey" value="<?php echo $USER->sesskey ?>" />
 
 <table cellpadding="9" cellspacing="0" >
 <tr valign="top">