diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index ff6db703f..f186fe7d5 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -1198,7 +1198,7 @@ class FileField(Field):
         return data
 
     def to_representation(self, value):
-        if self.use_url:
+        if self.use_url and hasattr(value, 'url'):
             if not value:
                 return None
             url = value.url