diff --git a/templates/mod/edit_post_form.html b/templates/mod/edit_post_form.html
index a2980d35..0261ba69 100644
--- a/templates/mod/edit_post_form.html
+++ b/templates/mod/edit_post_form.html
@@ -23,7 +23,7 @@
 				{% trans %}Subject{% endtrans %}
 			</th>
 			<td>
-				<input style="float:left;" type="text" name="subject" size="25" maxlength="100" autocomplete="off" value="{{ post.subject }}">
+				<input style="float:left;" type="text" name="subject" size="25" maxlength="100" autocomplete="off" value="{{ post.subject|e }}">
 				<input accesskey="s" style="margin-left:2px;" type="submit" name="post" value="{% trans %}Update{% endtrans %}">
 			</td>
 		</tr>