diff --git a/classes/ConfigurationTest.php b/classes/ConfigurationTest.php
index fa9c6a0b8..a6d27bad4 100644
--- a/classes/ConfigurationTest.php
+++ b/classes/ConfigurationTest.php
@@ -76,6 +76,7 @@ class ConfigurationTestCore
 			'register_globals' => false,
 			'gz' => false,
 			'mcrypt' => false,
+			'mbstring' => false,
 			'magicquotes' => false,
 			'dom' => false,
 			'pdo_mysql' => false,
diff --git a/install-dev/theme/views/configure.phtml b/install-dev/theme/views/configure.phtml
index 33401430e..e0e147420 100644
--- a/install-dev/theme/views/configure.phtml
+++ b/install-dev/theme/views/configure.phtml
@@ -50,6 +50,8 @@ var default_iso = '<?php echo $this->session->shop_country ?>';
 		</div>
 		<p class="userInfos aligned"><?php echo $this->l('Demo products are a good way to learn how to use PrestaShop. You should install them if you are not familiar with it.') ?></p>
 	</div>
+	<?php else: ?>
+		<input value="full" name="db_mode" type="hidden" />
 	<?php endif; ?>
 
 	<!-- Country list -->