diff --git a/templates/post_form.html b/templates/post_form.html
index 11f11e74..476ed8d7 100644
--- a/templates/post_form.html
+++ b/templates/post_form.html
@@ -91,7 +91,7 @@
 				{% trans %}Verification{% endtrans %}
 			</th>
 			<td>
-				<script>load_captcha("{{ config.captcha.native.provider_get }}", "{{ config.native.captcha.extra }}");</script>
+				<script>load_captcha("{{ config.captcha.native.provider_get }}", "{{ config.captcha.native.extra }}");</script>
 				<noscript>
 					<input class='captcha_text' type='text' name='captcha_text' size='32' maxlength='6' autocomplete='off'>
 					<div class="captcha_html">