diff --git a/module/dca/tl_leaflet_control.php b/module/dca/tl_leaflet_control.php
index 6177904..3bc5278 100644
--- a/module/dca/tl_leaflet_control.php
+++ b/module/dca/tl_leaflet_control.php
@@ -166,7 +166,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_control'] = array
             'inputType'     => 'text',
             'search'        => true,
             'save_callback' => array(
-                \Netzmacht\Contao\Toolkit\Dca::createGenerateAliasCallback('tl_leaflet_control', 'title'),
+                \Netzmacht\Contao\Leaflet\Dca\Helper::createGenerateAliasCallback('tl_leaflet_control', 'title'),
             ),
             'eval'          => array('mandatory' => false, 'maxlength' => 255, 'tl_class' => 'w50', 'unique' => true),
             'sql'           => "varchar(255) NOT NULL default ''"
diff --git a/module/dca/tl_leaflet_icon.php b/module/dca/tl_leaflet_icon.php
index 806908f..677888b 100644
--- a/module/dca/tl_leaflet_icon.php
+++ b/module/dca/tl_leaflet_icon.php
@@ -174,7 +174,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_icon'] = array
             'exclude'       => true,
             'inputType'     => 'text',
             'save_callback' => array(
-                \Netzmacht\Contao\Toolkit\Dca::createGenerateAliasCallback('tl_leaflet_icon', 'title'),
+                \Netzmacht\Contao\Leaflet\Dca\Helper::createGenerateAliasCallback('tl_leaflet_icon', 'title'),
             ),
             'eval'          => array('mandatory' => false, 'maxlength' => 255, 'tl_class' => 'w50', 'unique' => true),
             'sql'           => "varchar(255) NOT NULL default ''"
diff --git a/module/dca/tl_leaflet_layer.php b/module/dca/tl_leaflet_layer.php
index 1d10ccd..ed526fd 100644
--- a/module/dca/tl_leaflet_layer.php
+++ b/module/dca/tl_leaflet_layer.php
@@ -261,7 +261,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_layer'] = array
             'inputType'     => 'text',
             'search'        => true,
             'save_callback' => array(
-                \Netzmacht\Contao\Toolkit\Dca::createGenerateAliasCallback('tl_leaflet_layer', 'title'),
+                \Netzmacht\Contao\Leaflet\Dca\Helper::createGenerateAliasCallback('tl_leaflet_layer', 'title'),
             ),
             'eval'          => array('mandatory' => false, 'maxlength' => 255, 'tl_class' => 'w50', 'unique' => true),
             'sql'           => "varchar(255) NOT NULL default ''"
diff --git a/module/dca/tl_leaflet_map.php b/module/dca/tl_leaflet_map.php
index 76fce22..c283bf5 100644
--- a/module/dca/tl_leaflet_map.php
+++ b/module/dca/tl_leaflet_map.php
@@ -163,7 +163,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_map'] = array
             'inputType' => 'text',
             'search'    => true,
             'save_callback' => array(
-                \Netzmacht\Contao\Toolkit\Dca::createGenerateAliasCallback('tl_leaflet_map', 'title'),
+                \Netzmacht\Contao\Leaflet\Dca\Helper::createGenerateAliasCallback('tl_leaflet_map', 'title'),
             ),
             'eval'      => array('mandatory' => false, 'maxlength' => 255, 'tl_class' => 'w50', 'unique' => true),
             'sql'       => "varchar(255) NOT NULL default ''"
diff --git a/module/dca/tl_leaflet_marker.php b/module/dca/tl_leaflet_marker.php
index 12bfb6d..beab48d 100644
--- a/module/dca/tl_leaflet_marker.php
+++ b/module/dca/tl_leaflet_marker.php
@@ -172,7 +172,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_marker'] = array
             'inputType'     => 'text',
             'search'        => true,
             'save_callback' => array(
-                \Netzmacht\Contao\Toolkit\Dca::createGenerateAliasCallback('tl_leaflet_marker', 'title'),
+                \Netzmacht\Contao\Leaflet\Dca\Helper::createGenerateAliasCallback('tl_leaflet_marker', 'title'),
             ),
             'eval'          => array('mandatory' => false, 'maxlength' => 255, 'tl_class' => 'w50', 'unique' => true),
             'sql'           => "varchar(255) NOT NULL default ''"
diff --git a/module/dca/tl_leaflet_popup.php b/module/dca/tl_leaflet_popup.php
index ef59223..d6e35aa 100644
--- a/module/dca/tl_leaflet_popup.php
+++ b/module/dca/tl_leaflet_popup.php
@@ -160,7 +160,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_popup'] = array
             'exclude'       => true,
             'inputType'     => 'text',
             'save_callback' => array(
-                \Netzmacht\Contao\Toolkit\Dca::createGenerateAliasCallback('tl_leaflet_popup', 'title'),
+                \Netzmacht\Contao\Leaflet\Dca\Helper::createGenerateAliasCallback('tl_leaflet_popup', 'title'),
             ),
             'eval'          => array('mandatory' => false, 'maxlength' => 255, 'tl_class' => 'w50', 'unique' => true),
             'sql'           => "varchar(255) NOT NULL default ''"
diff --git a/module/dca/tl_leaflet_style.php b/module/dca/tl_leaflet_style.php
index 0c8a6f3..f3ea5d9 100644
--- a/module/dca/tl_leaflet_style.php
+++ b/module/dca/tl_leaflet_style.php
@@ -153,7 +153,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_style'] = array
             'exclude'       => true,
             'inputType'     => 'text',
             'save_callback' => array(
-                \Netzmacht\Contao\Toolkit\Dca::createGenerateAliasCallback('tl_leaflet_style', 'title'),
+                \Netzmacht\Contao\Leaflet\Dca\Helper::createGenerateAliasCallback('tl_leaflet_style', 'title'),
             ),
             'eval'          => array('mandatory' => false, 'maxlength' => 255, 'tl_class' => 'w50', 'unique' => true),
             'sql'           => "varchar(255) NOT NULL default ''"
diff --git a/module/dca/tl_leaflet_vector.php b/module/dca/tl_leaflet_vector.php
index 44c8944..dcf6d4a 100644
--- a/module/dca/tl_leaflet_vector.php
+++ b/module/dca/tl_leaflet_vector.php
@@ -198,7 +198,7 @@ $GLOBALS['TL_DCA']['tl_leaflet_vector'] = array
             'inputType'     => 'text',
             'search'        => true,
             'save_callback' => array(
-                \Netzmacht\Contao\Toolkit\Dca::createGenerateAliasCallback('tl_leaflet_vector', 'title'),
+                \Netzmacht\Contao\Leaflet\Dca\Helper::createGenerateAliasCallback('tl_leaflet_vector', 'title'),
             ),
             'eval'          => array('mandatory' => false, 'maxlength' => 255, 'tl_class' => 'w50', 'unique' => true),
             'sql'           => "varchar(255) NOT NULL default ''"
diff --git a/src/Netzmacht/Contao/Leaflet/Dca/Helper.php b/src/Netzmacht/Contao/Leaflet/Dca/Helper.php
new file mode 100644
index 0000000..5735699
--- /dev/null
+++ b/src/Netzmacht/Contao/Leaflet/Dca/Helper.php
@@ -0,0 +1,43 @@
+<?php
+
+/**
+ * @package    dev
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2015 netzmacht creative David Molineus
+ * @license    LGPL 3.0
+ * @filesource
+ *
+ */
+
+namespace Netzmacht\Contao\Leaflet\Dca;
+
+use Netzmacht\Contao\Toolkit\Dca;
+use Netzmacht\Contao\Toolkit\Dca\Callback\GenerateAliasCallback;
+
+/**
+ * Helper class for dca functions.
+ *
+ * @package Netzmacht\Contao\Leaflet\Dca
+ */
+class Helper
+{
+    /**
+     * Generate an alias callback which creates a valid javascript var name.
+     *
+     * @param string $table  The table.
+     * @param string $column The value column,
+     *
+     * @return GenerateAliasCallback
+     */
+    public static function createGenerateAliasCallback($table, $column)
+    {
+        $callback = Dca::createGenerateAliasCallback($table, $column);
+        $callback->getGenerator()->addFilter(
+            function ($value) {
+                return str_replace('-', '_', $value);
+            }
+        );
+
+        return $callback;
+    }
+}