diff -Ppru a/bin/update.sh b/bin/update.sh
--- a/bin/update.sh	2013-10-21 21:39:23.000000000 +0200
+++ b/bin/update.sh	2014-01-10 16:54:14.122476642 +0100
@@ -147,7 +147,7 @@ if ($RCI->configured) {
   if ($RCI->config['db_dsnw']) {
     echo "Executing database schema update.\n";
     system(INSTALL_PATH . "bin/updatedb.sh --package=roundcube --version=" . $opts['version']
-      . " --dir=" . INSTALL_PATH . DIRECTORY_SEPARATOR . "SQL", $res);
+      . " --dir=" . DOC_PATH . DIRECTORY_SEPARATOR . "SQL", $res);
 
     $success = !$res;
   }
diff -Ppru a/installer/rcube_install.php b/installer/rcube_install.php
--- a/installer/rcube_install.php	2013-10-21 21:39:23.000000000 +0200
+++ b/installer/rcube_install.php	2014-01-10 16:50:35.062609607 +0100
@@ -367,7 +367,7 @@ class rcube_install
       return false;
 
     // read reference schema from mysql.initial.sql
-    $db_schema = $this->db_read_schema(INSTALL_PATH . 'SQL/mysql.initial.sql');
+    $db_schema = $this->db_read_schema(DOC_PATH . 'SQL/mysql.initial.sql');
     $errors = array();
 
     // check list of tables
@@ -616,7 +616,7 @@ class rcube_install
     $engine = $DB->db_provider;
 
     // read schema file from /SQL/*
-    $fname = INSTALL_PATH . "SQL/$engine.initial.sql";
+    $fname = DOC_PATH . "SQL/$engine.initial.sql";
     if ($sql = @file_get_contents($fname)) {
       $this->exec_sql($sql, $DB);
     }
@@ -645,7 +645,7 @@ class rcube_install
   {
     system(INSTALL_PATH . "bin/updatedb.sh --package=roundcube"
       . " --version=" . escapeshellarg($version)
-      . " --dir=" . INSTALL_PATH . "SQL"
+      . " --dir=" . DOC_PATH . "SQL"
       . " 2>&1", $result);
 
     return !$result;
diff -Ppru a/program/include/iniset.php b/program/include/iniset.php
--- a/program/include/iniset.php	2013-10-21 21:39:23.000000000 +0200
+++ b/program/include/iniset.php	2014-01-10 16:49:21.280343926 +0100
@@ -38,6 +38,7 @@ if (!defined('RCUBE_LOCALIZATION_DIR'))
 
 define('RCUBE_INSTALL_PATH', INSTALL_PATH);
 define('RCUBE_CONFIG_DIR',  RCMAIL_CONFIG_DIR.'/');
+define('DOC_PATH',  '/usr/share/doc/packages/roundcubemail/');
 
 
 // RC include folders MUST be included FIRST to avoid other