diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index e7e4053f2..26abc460c 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -321,10 +321,10 @@ class BaseSerializer(WritableField):
         for field_name, field in self.fields.items():
             if field.read_only and obj is None:
                continue
-			elif field_name in getattr(self.opts, 'write_only_fields', ()):
-				key = self.get_field_key(field_name)
-				ret.fields[key] = self.augment_field(field, field_name, key, '')
-			else:
+            elif field_name in getattr(self.opts, 'write_only_fields', ()):
+                key = self.get_field_key(field_name)
+                ret.fields[key] = self.augment_field(field, field_name, key, '')
+            else:
                 field.initialize(parent=self, field_name=field_name)
                 key = self.get_field_key(field_name)
                 value = field.field_to_native(obj, field_name)
@@ -879,8 +879,8 @@ class ModelSerializer(Serializer):
         """
         Restore the model instance.
         """
-		attrs = dict((k,v) for (k,v) in filter(
-			lambda x:x not in getattr(self.opts, 'write_only_fields', ()), attrs.items()))
+        attrs = dict((k,v) for (k,v) in filter(
+            lambda x:x not in getattr(self.opts, 'write_only_fields', ()), attrs.items()))
         m2m_data = {}
         related_data = {}
         nested_forward_relations = {}