diff --git a/themes/root/templates/error/index.phtml b/themes/root/templates/error/index.phtml
index 9e53e5a5e67434b4be60b8fc9bc2c093b90cdba5..4e4bb612df97f384bab294e6b6b84bbeb880e4b5 100644
--- a/themes/root/templates/error/index.phtml
+++ b/themes/root/templates/error/index.phtml
@@ -11,7 +11,7 @@
 <? if (isset($this->display_exceptions) && $this->display_exceptions): ?>
   <h3><?=$this->transEsc('Exception')?>:</h3>
   <p>
-    <b><?=$this->transEsc('Message')?>:</b> <?=$this->exception->getMessage()?>
+    <b><?=$this->transEsc('Message')?>:</b> <?=$this->escapeHtml($this->exception->getMessage())?>
   </p>
 
   <h3><?=$this->transEsc('Backtrace')?>:</h3>