diff --git a/module/gallery/gallery.php b/module/gallery/gallery.php
index 07f61521..69381a3c 100644
--- a/module/gallery/gallery.php
+++ b/module/gallery/gallery.php
@@ -226,6 +226,7 @@ class gallery extends common {
 		if ( $this->getData(['module',  $this->getUrl(0), 'theme']) === null ) {
 			require_once('module/gallery/ressource/defaultdata.php');
 			$this->setData(['module',  $this->getUrl(0), 'theme', theme::$defaultTheme]);
+			$this->setData(['module',  $this->getUrl(0), 'config', theme::$defaultConfig]);
 			// Nom de la feuille de style
 			$this->setData(['module',  $this->getUrl(0), 'theme', 'style', $fileCSS]);
 		}
diff --git a/module/gallery/ressource/defaultdata.php b/module/gallery/ressource/defaultdata.php
index 737999c3..e8745929 100644
--- a/module/gallery/ressource/defaultdata.php
+++ b/module/gallery/ressource/defaultdata.php
@@ -1,20 +1,25 @@
 <?php
 class theme extends gallery {
 	public static $defaultTheme = [
-            'thumbAlign' 	   => 'center',
-            'thumbWidth' 	   => '18em',
-            'thumbHeight'	   => '15em',
-            'thumbMargin'	   => '.5em',
-            'thumbBorder'	   => '.1em',
-            'thumbOpacity'	   => '.7',
-            'thumbBorderColor' => 'rgba(221, 221, 221, 1)',
-            'thumbRadius'      => '.3em',
-            'thumbShadows'     => '1px 1px 10px',
-            'thumbShadowsColor'=> 'rgba(125, 125, 125, 1)',
-            'legendHeight'	   => '.375em',
-            'legendAlign'	   => 'center',
-            'legendTextColor'  => 'rgba(255, 255, 255, 1)',
-            'legendBgColor'	   => 'rgba(0, 0, 0, .6)'
+            'thumbAlign' 	=> 'center',
+            'thumbWidth' 	=> '18em',
+            'thumbHeight'	=> '15em',
+            'thumbMargin'	=> '.5em',
+            'thumbBorder'	=> '.1em',
+            'thumbOpacity'	=> '.7',
+            'thumbBorderColor'  => 'rgba(221, 221, 221, 1)',
+            'thumbRadius'       => '.3em',
+            'thumbShadows'      => '1px 1px 10px',
+            'thumbShadowsColor' => 'rgba(125, 125, 125, 1)',
+            'legendHeight'	=> '.375em',
+            'legendAlign'	=> 'center',
+            'legendTextColor'   => 'rgba(255, 255, 255, 1)',
+            'legendBgColor'     => 'rgba(0, 0, 0, .6)'
+    ];
+    public static $defaultConfig = [
+            "showUniqueGallery" => false,
+            "backPosition"      => "top",
+            "backAlign"         => "center"
     ];
     public static $defaultData = [
             'versionData'      => '3.0'