diff --git a/inc/config.php b/inc/config.php
index af992f0c..2e5e9fd9 100644
--- a/inc/config.php
+++ b/inc/config.php
@@ -329,7 +329,11 @@
             'answer' => '4'
         );
     */
-    // The captcha is dynamically injected on the client if the server replies with the `captcha-required` cookie set to 1.
+    /**
+     * The captcha is dynamically injected on the client if the server replies with the `captcha-required` cookie set
+     * to 1.
+     * Use false to disable this configuration, otherwise, set the IP that vichan should check for captcha responses.
+     */
     $config['dynamic_captcha'] = false;
 
     // Enable reCaptcha to make spam even harder. Rarely necessary.
diff --git a/post.php b/post.php
index df5e6a72..172f251e 100644
--- a/post.php
+++ b/post.php
@@ -727,7 +727,7 @@ function handle_post()
 
 
     if (!$dropped_post) {
-        if ($config['dynamic_captcha'] && $_SERVER['REMOTE_ADDR'] === '127.0.0.1') {
+        if ($config['dynamic_captcha'] !== false && $_SERVER['REMOTE_ADDR'] === $config['dynamic_captcha']) {
             if ($config['recaptcha']) {
                 if (!isset($_POST['g-recaptcha-response'])) {
                     error($config['error']['bot']);
@@ -747,7 +747,7 @@ function handle_post()
         }
 
         // Check for CAPTCHA right after opening the board so the "return" link is in there.
-        if (!$config['dynamic_captcha']) {
+        if ($config['dynamic_captcha'] === false) {
             if ($config['recaptcha']) {
                 if (!isset($_POST['g-recaptcha-response'])) {
                     error($config['error']['bot']);