diff --git a/entity.module b/entity.module
index 2af9f47..a657245 100644
--- a/entity.module
+++ b/entity.module
@@ -1384,6 +1384,9 @@ function _entity_info_add_metadata(&$entity_info) {
   $entity_info['node']['form callback'] = 'entity_metadata_form_node';
   $entity_info['user']['form callback'] = 'entity_metadata_form_user';
 
+  // URI callbacks.
+  $entity_info['file']['uri callback'] = 'entity_metadata_uri_file';
+
   // View callbacks.
   $entity_info['node']['view callback'] = 'entity_metadata_view_node';
   $entity_info['user']['view callback'] = 'entity_metadata_view_single';
diff --git a/modules/callbacks.inc b/modules/callbacks.inc
index 5203028..ce08fb3 100644
--- a/modules/callbacks.inc
+++ b/modules/callbacks.inc
@@ -946,3 +946,13 @@ function entity_metadata_field_query($entity_type, $property, $value, $limit) {
   $result = $query->execute();
   return !empty($result[$entity_type]) ? array_keys($result[$entity_type]) : array();
 }
+
+/**
+ * Callback so that entity_uri() can generate a uri for file entities.
+ */
+function entity_metadata_uri_file($file) {
+  return array(
+    'path' => file_create_url($file->uri),
+  );
+}
+