diff --git a/post.php b/post.php
index ddfb1f18..86178cde 100644
--- a/post.php
+++ b/post.php
@@ -559,7 +559,7 @@ if (isset($_POST['delete'])) {
 
 	if (!$dropped_post) {
 		if (isset($config['simple_spam']) && $config['simple_spam'] && $post['op']) {
-			if (!isset($_POST['simple_spam']) || $config['simple_spam']['answer'] != $_POST['simple_spam']) {
+			if (!isset($_POST['simple_spam']) || strtolower($config['simple_spam']['answer']) != strtolower($_POST['simple_spam'])) {
 				error($config['error']['simple_spam']);
 			}
 		}