From a5fbba740b21d28c59119103081b04d8c8876036 Mon Sep 17 00:00:00 2001
From: David Molineus <david.molineus@netzmacht.de>
Date: Mon, 9 Oct 2017 14:18:24 +0200
Subject: [PATCH] Fix invalid default value.

---
 src/Resources/contao/dca/tl_leaflet_map.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Resources/contao/dca/tl_leaflet_map.php b/src/Resources/contao/dca/tl_leaflet_map.php
index 63dc70c..43cef78 100644
--- a/src/Resources/contao/dca/tl_leaflet_map.php
+++ b/src/Resources/contao/dca/tl_leaflet_map.php
@@ -243,7 +243,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_map'] = array
             'exclude'          => true,
             'inputType'        => 'select',
             'options_callback' => ['netzmacht.contao_leaflet_maps.listeners.dca.leaflet', 'getZoomLevels'],
-            'default'          => '',
+            'default'          => null,
             'eval'             => array(
                 'maxlength'          => 4,
                 'rgxp'               => 'digit',