diff --git a/apps/gallery/lib/tiles.php b/apps/gallery/lib/tiles.php
index 2bc8d4fcce0..011168471f0 100644
--- a/apps/gallery/lib/tiles.php
+++ b/apps/gallery/lib/tiles.php
@@ -168,7 +168,7 @@ class TileStack extends TileBase {
 	}
 	
 	public function getOnClickAction() {
-		return 'javascript:openNewGal(\''.$this->stack_name.'\');';
+		return 'javascript:openNewGal(\''.\OCP\Util::sanitizeHTML($this->stack_name).'\');';
 	}
 
 	private $tiles_array;
diff --git a/apps/gallery/templates/index.php b/apps/gallery/templates/index.php
index 1890552fc0c..037e53059d1 100644
--- a/apps/gallery/templates/index.php
+++ b/apps/gallery/templates/index.php
@@ -1,6 +1,6 @@
 <script type="text/javascript">
 
-var root = "<?php echo $_['root']; ?>";
+var root = "<?php echo OCP\Util::sanitizeHTML($_['root']); ?>";
 
 $(document).ready(function() {
 		$("a[rel=images]").fancybox({