diff --git a/src/IlluminateSnappyImage.php b/src/IlluminateSnappyImage.php
index 64f2c7e..2a3d2a7 100644
--- a/src/IlluminateSnappyImage.php
+++ b/src/IlluminateSnappyImage.php
@@ -4,6 +4,10 @@
 use Illuminate\Filesystem\Filesystem;
 
 class IlluminateSnappyImage extends Image {
+    /**
+     * @var \Illuminate\Filesystem\Filesystem
+     */
+    protected $fs;
 
 	/**
 	 * @param \Illuminate\Filesystem\Filesystem
diff --git a/src/ImageWrapper.php b/src/ImageWrapper.php
index d714dd3..28fe0d7 100644
--- a/src/ImageWrapper.php
+++ b/src/ImageWrapper.php
@@ -23,6 +23,15 @@ class ImageWrapper {
      */
     protected $options = array();
 
+    /**
+     * @var string
+     */
+    protected $html;
+
+    /**
+     * @var string
+     */
+    protected $file;
 
     /**
      * @param \Knp\Snappy\Image $snappy