diff --git a/library/ajax/posts.php b/library/ajax/posts.php
index 2a6c8dc0..368a12aa 100644
--- a/library/ajax/posts.php
+++ b/library/ajax/posts.php
@@ -138,6 +138,13 @@ switch($this->request['type'])
 			{
 				if ($text != $post['post_text'])
 				{
+					if ($bb_cfg['max_post_length'])
+					{
+						if (mb_strlen($text, 'UTF-8') > $bb_cfg['max_post_length'])
+						{
+							$this->ajax_die(sprintf($lang['MAX_POST_LEN_PER_POST'], $bb_cfg['max_post_length']));
+						}
+					}
 					if ($bb_cfg['max_smilies'])
 					{
 						$count_smilies = substr_count(bbcode2html($text), '<img class="smile" src="'. $bb_cfg['smilies_path']);
@@ -287,6 +294,13 @@ switch($this->request['type'])
 			}
 		}
 
+		if ($bb_cfg['max_post_length'])
+		{
+			if (mb_strlen($message, 'UTF-8') > $bb_cfg['max_post_length'])
+			{
+				$this->ajax_die(sprintf($lang['MAX_POST_LEN_PER_POST'], $bb_cfg['max_post_length']));
+			}
+		}
 		if ($bb_cfg['max_smilies'])
 		{
 			$count_smilies = substr_count(bbcode2html($message), '<img class="smile" src="'. $bb_cfg['smilies_path']);
diff --git a/library/config.php b/library/config.php
index 7dffbd74..83c11545 100644
--- a/library/config.php
+++ b/library/config.php
@@ -467,7 +467,7 @@ $bb_cfg['user_signature_end']     = '</div>';      // Это позволит и
 // Posts
 $bb_cfg['use_posts_cache']       = true;           // if you switch from ON to OFF, you need to TRUNCATE `bb_posts_html` table
 $bb_cfg['posts_cache_days_keep'] = 14;
-$bb_cfg['max_post_length']       = 2500;           // Max symbols in post
+$bb_cfg['max_post_length']       = 5000;           // максимальное число символов в посте (0 - без ограничения)
 $bb_cfg['use_ajax_posts']        = true;
 
 // Search
diff --git a/library/includes/functions_post.php b/library/includes/functions_post.php
index 07e3a40b..927182fd 100644
--- a/library/includes/functions_post.php
+++ b/library/includes/functions_post.php
@@ -49,6 +49,16 @@ function prepare_post(&$mode, &$post_data, &$error_msg, &$username, &$subject, &
 		$error_msg .= (!empty($error_msg)) ? '<br />' . $lang['EMPTY_MESSAGE'] : $lang['EMPTY_MESSAGE'];
 	}
 
+	// Check text limit
+	if ($bb_cfg['max_post_length'])
+	{
+		if (mb_strlen($message, 'UTF-8') > $bb_cfg['max_post_length'])
+		{
+			$to_many_letters = sprintf($lang['MAX_POST_LEN_PER_POST'], $bb_cfg['max_post_length']);
+			$error_msg .= (!empty($error_msg)) ? '<br />'. $to_many_letters : $to_many_letters;
+		}
+	}
+
 	// Check smilies limit
 	if ($bb_cfg['max_smilies'])
 	{
@@ -539,4 +549,4 @@ function topic_review ($topic_id)
 	$template->assign_vars(array(
 		'TPL_TOPIC_REVIEW' => (bool) $review_posts,
 	));
-}
\ No newline at end of file
+}
diff --git a/library/language/en/main.php b/library/language/en/main.php
index 7c9f0328..a37fd1b9 100644
--- a/library/language/en/main.php
+++ b/library/language/en/main.php
@@ -358,6 +358,7 @@ $lang['POLL_FOR_EXPLAIN'] = '[ Enter 0 or leave blank for a never-ending poll ]'
 $lang['DELETE_POLL'] = 'Delete poll';
 
 $lang['MAX_SMILIES_PER_POST'] = 'Emoticons limit of %s emoticons exceeded.';
+$lang['MAX_POST_LEN_PER_POST'] = 'The limit of %s characters in the message has been exceeded.';
 
 $lang['ATTACH_SIGNATURE'] = 'Attach signature (signatures can be changed in profile)';
 $lang['NOTIFY'] = 'Notify me when on replies';
diff --git a/library/language/ru/main.php b/library/language/ru/main.php
index 4bc9f840..cfdea005 100644
--- a/library/language/ru/main.php
+++ b/library/language/ru/main.php
@@ -358,6 +358,7 @@ $lang['POLL_FOR_EXPLAIN'] = '[ оставьте поле пустым, чтоб
 $lang['DELETE_POLL'] = 'Удалить опрос';
 
 $lang['MAX_SMILIES_PER_POST'] = 'Лимит в %s смайликов в сообщении превышен.';
+$lang['MAX_POST_LEN_PER_POST'] = 'Лимит в %s символов в сообщении превышен.';
 
 $lang['ATTACH_SIGNATURE'] = 'Присоединить подпись (можно изменять в профиле)';
 $lang['NOTIFY'] = 'Сообщать мне о получении ответа';
diff --git a/library/language/uk/main.php b/library/language/uk/main.php
index ad7c7ac3..135ad6a1 100644
--- a/library/language/uk/main.php
+++ b/library/language/uk/main.php
@@ -358,6 +358,7 @@ $lang['POLL_FOR_EXPLAIN'] = '[ залиште поле порожнім, щоб
 $lang['DELETE_POLL'] = 'Видалити опитування';
 
 $lang['MAX_SMILIES_PER_POST'] = 'Ліміт %s смайликів в повідомленні перевищений.';
+$lang['MAX_POST_LEN_PER_POST'] = 'Ліміт %s символів в повідомленні перевищений.';
 
 $lang['ATTACH_SIGNATURE'] = 'Приєднати підпис (можна змінювати в профілі)';
 $lang['NOTIFY'] = 'Повідомляти мені про одержання відповіді';