diff --git a/apps.manifest.inc b/apps.manifest.inc
index 5d2d1ec..f144fd5 100755
--- a/apps.manifest.inc
+++ b/apps.manifest.inc
@@ -265,11 +265,16 @@ function apps_retrieve_app_image($url, $title = FALSE, $alt = FALSE) {
       $current->alt = $alt ? $alt : $title;
       return $current;
     }
+    else {
+      // TODO delete managed file object
+      file_unmanaged_delete($current->uri);
+    }
   }
    
   $request = drupal_http_request($url, array(), 'GET');
 
-  if (isset($request->data)) {
+  // TODO check response is actually an image
+  if (isset($request->data) && $request->code == '200') { // to avoid 404 status where image haven't been found
     if (!file_exists(drupal_realpath(file_build_uri('apps')))) {
       drupal_mkdir(file_build_uri('apps'));
     }