diff --git a/acp/ajaxchat_module.php b/acp/ajaxchat_module.php
index 544b192..683b249 100644
--- a/acp/ajaxchat_module.php
+++ b/acp/ajaxchat_module.php
@@ -199,18 +199,16 @@ public function prune_chat($value, $key)
 			}
 			if ($this->u_action === 'prune_chat')
 			{
-				$sql	 = 'SELECT message_id 
-							FROM ' . CHAT_TABLE . ' 
-							ORDER BY message_id DESC ';
-				$result	 = $this->db->sql_query_limit($sql, $this->config['prune_keep_ajax_chat'], 1);
-				$row	 = $this->db->sql_fetchrow($result);
+				$sql = 'SELECT message_id
+					FROM ' . CHAT_TABLE . '
+					ORDER BY message_id DESC ';
+				$result = $this->db->sql_query_limit($sql, 1, $this->config['prune_keep_ajax_chat']);
+				$row = $this->db->sql_fetchfield('message_id');
 				$this->db->sql_freeresult($result);
 				$sql1 = 'DELETE FROM ' . CHAT_TABLE . '
-						 WHERE `message_id` < ' . (int) $row['message_id'] . '';
+					WHERE `message_id` <= ' . (int) $row . '';
 				$this->db->sql_query($sql1);
 
-				add_log('admin', 'PRUNE_LOG_AJAXCHAT');
-
 				if ($this->request->is_ajax())
 				{
 					trigger_error($this->user->lang['PRUNE_CHAT_SUCCESS']);
@@ -252,8 +250,6 @@ public function truncate_chat($value, $key)
 				$sql1 = 'TRUNCATE ' . CHAT_TABLE . '';
 				$this->db->sql_query($sql1);
 
-				add_log('admin', 'TRUNCATE_LOG_AJAXCHAT');
-
 				if ($this->request->is_ajax())
 				{
 					trigger_error($this->user->lang['TRUNCATE_CHAT_SUCCESS']);