diff --git a/wcs/fields.py b/wcs/fields.py
index d6afcfc3e..9be50b49b 100644
--- a/wcs/fields.py
+++ b/wcs/fields.py
@@ -713,7 +713,7 @@ class FileField(WidgetField):
             'field_id': self.id,
             'filename': value.base_filename,
             'content_type': value.content_type or 'application/octet-stream',
-            'content': base64.b64encode(value.get_file_pointer().read())
+            'content': base64.b64encode(value.get_content())
         }
 
     def perform_more_widget_changes(self, form, kwargs, edit = True):