diff --git a/rest_framework/metadata.py b/rest_framework/metadata.py
index 68e6161b6..c400b1b79 100644
--- a/rest_framework/metadata.py
+++ b/rest_framework/metadata.py
@@ -125,7 +125,7 @@ class SimpleMetadata(BaseMetadata):
             'read_only', 'label', 'help_text',
             'min_length', 'max_length',
             'min_value', 'max_value',
-            'max_digits', 'decimal_places',
+            'max_digits', 'decimal_places'
         ]
 
         for attr in attrs: