diff --git a/composer.json b/composer.json
index f43d3b8..f935eb4 100644
--- a/composer.json
+++ b/composer.json
@@ -58,10 +58,7 @@
                 "prefix": "core-",
                 "languages_cto": "module/languages",
                 "languages_tx": ".tx"
-            },
-            "runonce": [
-                "runonce/migrate.php"
-            ]
+            }
         }
     }
 }
diff --git a/runonce/migrate.php b/runonce/migrate.php
deleted file mode 100644
index 0e61b66..0000000
--- a/runonce/migrate.php
+++ /dev/null
@@ -1,93 +0,0 @@
-<?php
-
-/**
- * @package    dev
- * @author     David Molineus <david.molineus@netzmacht.de>
- * @copyright  2014 netzmacht creative David Molineus
- * @license    LGPL 3.0
- * @filesource
- *
- */
-
-namespace Netzmacht\Contao\Leaflet\runonce;
-
-/**
- * Migrate controller.
- *
- * @package Netzmacht\Contao\Leaflet\runonce
- */
-class migrate
-{
-    /**
-     * Execute the migration.
-     *
-     * @return void
-     */
-    public function execute()
-    {
-        $database = \Database::getInstance();
-
-        if ($database->fieldExists('coordinates', 'tl_leaflet_marker')) {
-            $this->createFields($database);
-            $this->convertCoordinates($database);
-        }
-    }
-
-    /**
-     * @param $database
-     *
-     * @param \Database $database The database connection.
-     *
-     * @return array
-     */
-    protected function createFields(\Database $database)
-    {
-        if (!$database->fieldExists('latitude', 'tl_leaflet_marker')) {
-            $database->execute('ALTER TABLE tl_leaflet_marker ADD latitude DECIMAL (10, 8) NULL;');
-        }
-
-        if (!$database->fieldExists('longitude', 'tl_leaflet_marker')) {
-            $database->execute('ALTER TABLE tl_leaflet_marker ADD longitude DECIMAL (11, 8)  NULL;');
-        }
-
-        if (!$database->fieldExists('altitude', 'tl_leaflet_marker')) {
-            $database->execute('ALTER TABLE tl_leaflet_marker ADD altitude float NULL;');
-        }
-    }
-
-    /**
-     * Convert coordinates to new splitted fields.
-     *
-     * @param \Database $database The database connection.
-     *
-     * @return void
-     */
-    private function convertCoordinates(\Database $database)
-    {
-        $query = <<<SQL
-SELECT id,coordinates
-FROM   tl_leaflet_marker
-WHERE  coordinates <> '' AND latitude IS NULL aND longitude IS NULL AND altitude IS NULL
-SQL;
-
-        $result = $database->query($query);
-
-        while ($result->next()) {
-            list($latitude, $longitude, $altitude) = trimsplit(',', $result->coordinates);
-
-            $database
-                ->prepare('UPDATE tl_leaflet_marker %s WHERE id=?')
-                ->set(
-                    array(
-                        'latitude'  => $latitude,
-                        'longitude' => $longitude,
-                        'altitude'  => $altitude
-                    )
-                )
-                ->execute($result->id);
-        }
-    }
-}
-
-$controller = new migrate();
-$controller->execute();