diff --git a/CHANGELOG b/CHANGELOG
index 8097fdd91..89af28c38 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,6 +1,7 @@
 CHANGELOG RoundCube Webmail
 ===========================
 
+- Use sequence names only with PostgreSQL (#1486018)
 - Re-designed User Preferences interface 
 - Fix MS SQL DDL (#1486020)
 - Fix rcube_mdb2.php: call to setCharset not implemented in mssql driver (#1486019)
diff --git a/program/include/rcube_contacts.php b/program/include/rcube_contacts.php
index e85c865f2..a931845ae 100644
--- a/program/include/rcube_contacts.php
+++ b/program/include/rcube_contacts.php
@@ -271,7 +271,7 @@ class rcube_contacts extends rcube_addressbook
          VALUES (".intval($this->user_id).", ".$this->db->now().", 0, ".join(', ', $a_insert_values).")"
         );
         
-      $insert_id = $this->db->insert_id(get_sequence_name('contacts'));
+      $insert_id = $this->db->insert_id('contacts');
     }
 
     return $insert_id;
diff --git a/program/include/rcube_mdb2.php b/program/include/rcube_mdb2.php
index 12f3c1652..2fce391d9 100644
--- a/program/include/rcube_mdb2.php
+++ b/program/include/rcube_mdb2.php
@@ -321,16 +321,20 @@ class rcube_mdb2
    * Get last inserted record ID
    * For Postgres databases, a sequence name is required
    *
-   * @param  string  Sequence name for increment
+   * @param  string  Table name (to find the incremented sequence)
    * @return mixed   ID or FALSE on failure
    * @access public
    */
-  function insert_id($sequence = '')
+  function insert_id($table = '')
     {
     if (!$this->db_handle || $this->db_mode=='r')
       return FALSE;
 
-    $id = $this->db_handle->lastInsertID($sequence);
+    // find sequence name
+    if ($table && $this->db_provider == 'pgsql')
+      $table = get_sequence_name($table);
+
+    $id = $this->db_handle->lastInsertID($table);
     
     return $this->db_handle->isError($id) ? null : $id;
     }
diff --git a/program/include/rcube_user.php b/program/include/rcube_user.php
index d933aa3c9..54a76c5ab 100644
--- a/program/include/rcube_user.php
+++ b/program/include/rcube_user.php
@@ -231,7 +231,7 @@ class rcube_user
     call_user_func_array(array($this->db, 'query'),
                         array_merge(array($sql), $insert_values));
 
-    return $this->db->insert_id(get_sequence_name('identities'));
+    return $this->db->insert_id('identities');
   }
   
   
@@ -386,7 +386,7 @@ class rcube_user
       strip_newlines($data['alias'] ? $data['alias'] : $user_email),
       $_SESSION['language']);
 
-    if ($user_id = $dbh->insert_id(get_sequence_name('users')))
+    if ($user_id = $dbh->insert_id('users'))
     {
       // create rcube_user instance to make plugin hooks work
       $user_instance = new rcube_user($user_id);