diff --git a/imgboard.php b/imgboard.php
index 99bab4f..3110541 100644
--- a/imgboard.php
+++ b/imgboard.php
@@ -237,6 +237,15 @@ if (!isset($_GET['delete']) && !isset($_GET['manage']) && (isset($_POST['name'])
 	}
 
 	$post = newPost(setParent());
+	
+	if (!$loggedin) {
+		if ($post['parent'] == TINYIB_NEWTHREAD && TINYIB_DISALLOWTHREADS != '') {
+			fancyDie(TINYIB_DISALLOWTHREADS);
+		} else if ($post['parent'] != TINYIB_NEWTHREAD && TINYIB_DISALLOWREPLIES != '') {
+			fancyDie(TINYIB_DISALLOWREPLIES);
+		}
+	}
+
 	$hide_fields = $post['parent'] == TINYIB_NEWTHREAD ? $tinyib_hidefieldsop : $tinyib_hidefields;
 
 	if ($post['parent'] != TINYIB_NEWTHREAD && !$loggedin) {
diff --git a/inc/defines.php b/inc/defines.php
index bbe4645..a177cff 100644
--- a/inc/defines.php
+++ b/inc/defines.php
@@ -58,6 +58,12 @@ if (!defined('TINYIB_REPORT')) {
 if (!defined('TINYIB_REQMOD')) {
 	define('TINYIB_REQMOD', '');
 }
+if (!defined('TINYIB_DISALLOWTHREADS')) {
+	define('TINYIB_DISALLOWTHREADS', '');
+}
+if (!defined('TINYIB_DISALLOWREPLIES')) {
+	define('TINYIB_DISALLOWREPLIES', '');
+}
 if (!defined('TINYIB_ALWAYSNOKO')) {
 	define('TINYIB_ALWAYSNOKO', false);
 }
diff --git a/settings.default.php b/settings.default.php
index 9a0bdec..ce9591e 100644
--- a/settings.default.php
+++ b/settings.default.php
@@ -27,6 +27,8 @@ define('TINYIB_CAPTCHA', '');         // Reduce spam by requiring users to pass
 define('TINYIB_MANAGECAPTCHA', '');   // Improve security by requiring users to pass a CAPTCHA when logging in to the management panel: simple / recaptcha  ['' to disable]
 define('TINYIB_REPORT', false);       // Allow users to report posts
 define('TINYIB_REQMOD', '');          // Require moderation before displaying posts: files / all  ['' to disable]
+define('TINYIB_DISALLOWTHREADS', ''); // When set, users attempting to post a new thread are shown this message instead  ['' to disable]
+define('TINYIB_DISALLOWREPLIES', ''); // When set, users attempting to post a reply are shown this message instead  ['' to disable]
 
 // Board appearance
 define('TINYIB_INDEX', 'index.html'); // Index file