diff --git a/classes/controller/FrontController.php b/classes/controller/FrontController.php
index f8eac8cab..ab9d3bad8 100755
--- a/classes/controller/FrontController.php
+++ b/classes/controller/FrontController.php
@@ -795,7 +795,7 @@ class FrontControllerCore extends Controller
 			'conditions' => Configuration::get('PS_CONDITIONS'),
 			'id_cgv' => Configuration::get('PS_CONDITIONS_CMS_ID'),
 			'PS_SHOP_NAME' => Configuration::get('PS_SHOP_NAME'),
-			'PS_ALLOW_MOBILE_DEVICE' => file_exists(_PS_THEME_MOBILE_DIR_) && (bool)Configuration::get('PS_ALLOW_MOBILE_DEVICE')
+			'PS_ALLOW_MOBILE_DEVICE' => isset($_SERVER['HTTP_USER_AGENT']) && (bool)Configuration::get('PS_ALLOW_MOBILE_DEVICE') && @filemtime(_PS_THEME_MOBILE_DIR_)
 		));
 
 	}
diff --git a/themes/default/footer.tpl b/themes/default/footer.tpl
index 8958cae59..5e3a75968 100644
--- a/themes/default/footer.tpl
+++ b/themes/default/footer.tpl
@@ -36,7 +36,9 @@
 <!-- Footer -->
 			<div id="footer" class="grid_9 alpha omega clearfix">
 				{$HOOK_FOOTER}
-				<p class="center clearBoth"><a href="{$link->getPageLink('index', true)}?mobile_theme_ok">{l s='Browse the mobile site'}</a></p>
+				{if $PS_ALLOW_MOBILE_DEVICE}
+					<p class="center clearBoth"><a href="{$link->getPageLink('index', true)}?mobile_theme_ok">{l s='Browse the mobile site'}</a></p>
+				{/if}
 			</div>
 		</div>
 	{/if}