diff --git a/plugins/calendar/drivers/database/database_driver.php b/plugins/calendar/drivers/database/database_driver.php
index 3b949ad6..44f6bd6c 100644
--- a/plugins/calendar/drivers/database/database_driver.php
+++ b/plugins/calendar/drivers/database/database_driver.php
@@ -47,9 +47,6 @@ class database_driver extends calendar_driver
   private $db_events = 'events';
   private $db_calendars = 'calendars';
   private $db_attachments = 'attachments';
-  private $sequence_events = 'event_ids';
-  private $sequence_calendars = 'calendar_ids';
-  private $sequence_attachments = 'attachment_ids';
 
 
   /**
@@ -68,9 +65,6 @@ class database_driver extends calendar_driver
     $this->db_events = $this->rc->config->get('db_table_events', $this->db_events);
     $this->db_calendars = $this->rc->config->get('db_table_calendars', $this->db_calendars);
     $this->db_attachments = $this->rc->config->get('db_table_attachments', $this->db_attachments);
-    $this->sequence_events = $this->rc->config->get('db_sequence_events', $this->sequence_events);
-    $this->sequence_calendars = $this->rc->config->get('db_sequence_calendars', $this->sequence_calendars);
-    $this->sequence_attachments = $this->rc->config->get('db_sequence_attachments', $this->sequence_attachments);
     
     $this->_read_calendars();
   }
@@ -154,7 +148,7 @@ class database_driver extends calendar_driver
     );
     
     if ($result)
-      return $this->rc->db->insert_id($this->sequence_calendars);
+      return $this->rc->db->insert_id($this->db_calendars);
     
     return false;
   }
@@ -266,7 +260,7 @@ class database_driver extends calendar_driver
         $event['notifyat']
       );
 
-      $event_id = $this->rc->db->insert_id($this->sequence_events);
+      $event_id = $this->rc->db->insert_id($this->db_events);
 
       if ($event_id) {
         $event['id'] = $event_id;
diff --git a/plugins/tasklist/drivers/database/tasklist_database_driver.php b/plugins/tasklist/drivers/database/tasklist_database_driver.php
index ae2b5e25..93734ca2 100644
--- a/plugins/tasklist/drivers/database/tasklist_database_driver.php
+++ b/plugins/tasklist/drivers/database/tasklist_database_driver.php
@@ -36,8 +36,6 @@ class tasklist_database_driver extends tasklist_driver
 
     private $db_tasks = 'tasks';
     private $db_lists = 'tasklists';
-    private $sequence_tasks = 'task_ids';
-    private $sequence_lists = 'tasklist_ids';
 
 
     /**
@@ -51,8 +49,6 @@ class tasklist_database_driver extends tasklist_driver
         // read database config
         $this->db_lists = $this->rc->config->get('db_table_lists', $this->db_lists);
         $this->db_tasks = $this->rc->config->get('db_table_tasks', $this->db_tasks);
-        $this->sequence_lists = $this->rc->config->get('db_sequence_lists', $this->sequence_lists);
-        $this->sequence_tasks = $this->rc->config->get('db_sequence_tasks', $this->sequence_tasks);
 
         $this->_read_lists();
     }
@@ -119,7 +115,7 @@ class tasklist_database_driver extends tasklist_driver
         );
 
         if ($result)
-            return $this->rc->db->insert_id($this->sequence_lists);
+            return $this->rc->db->insert_id($this->db_lists);
 
         return false;
     }
@@ -528,7 +524,7 @@ class tasklist_database_driver extends tasklist_driver
         );
 
         if ($result)
-            return $this->rc->db->insert_id($this->sequence_tasks);
+            return $this->rc->db->insert_id($this->db_tasks);
 
         return false;
     }