diff --git a/flask_wtf/file.py b/flask_wtf/file.py
index b9e685dd..231a8dd8 100644
--- a/flask_wtf/file.py
+++ b/flask_wtf/file.py
@@ -1,6 +1,7 @@
 from werkzeug import FileStorage
 from wtforms import FileField as _FileField
 from wtforms import ValidationError
+from wtforms.validators import InputRequired, StopValidation
 
 
 class FileField(_FileField):
@@ -21,7 +22,7 @@ def has_file(self):
         return self.data.filename not in [None, '', '<fdopen>']
 
 
-class FileRequired(object):
+class FileRequired(InputRequired):
     """
     Validates that field has a file.
 
@@ -30,12 +31,13 @@ class FileRequired(object):
     You can also use the synonym **file_required**.
     """
 
-    def __init__(self, message=None):
-        self.message = message
-
     def __call__(self, form, field):
         if not field.has_file():
-            raise ValidationError(self.message)
+            if self.message is None:
+                message = field.gettext('This field is required.')
+            else:
+                message = self.message
+            raise StopValidation(message)
 
 file_required = FileRequired