diff --git a/templates/post_form.html b/templates/post_form.html
index 03b9961f..599ae754 100644
--- a/templates/post_form.html
+++ b/templates/post_form.html
@@ -59,7 +59,7 @@
 				{{ antibot.html() }}
 			</th>
 			<td>
-				<script type="text/javascript" src="http://www.google.com/recaptcha/api/challenge?k={{ config.recaptcha_public }}"></script>
+				<script type="text/javascript" src="//www.google.com/recaptcha/api/challenge?k={{ config.recaptcha_public }}"></script>
 				{{ antibot.html() }}
 			</td>
 		</tr>