diff --git a/mongoengine/queryset.py b/mongoengine/queryset.py
index 3b37c3d7..58ea61c6 100644
--- a/mongoengine/queryset.py
+++ b/mongoengine/queryset.py
@@ -346,18 +346,18 @@ class QuerySet(object):
         self._skip = None
 
     def clone(self):
-      """Creates a copy of the current :class:`~mongoengine.queryset.QuerySet`"""
-      c = self.__class__(self._document, self._collection_obj)
+        """Creates a copy of the current :class:`~mongoengine.queryset.QuerySet`"""
+        c = self.__class__(self._document, self._collection_obj)
 
-      copy_props = ('_initial_query', '_query_obj', '_where_clause',
+        copy_props = ('_initial_query', '_query_obj', '_where_clause',
                     '_loaded_fields', '_ordering', '_snapshot',
                     '_timeout', '_limit', '_skip')
 
-      for prop in copy_props:
-        val = getattr(self, prop)
-        setattr(c, prop, copy.deepcopy(val))
+        for prop in copy_props:
+            val = getattr(self, prop)
+            setattr(c, prop, copy.deepcopy(val))
 
-      return c
+        return c
 
     @property
     def _query(self):