diff --git a/flake8_isort.py b/flake8_isort.py
index ba72a9a..2304962 100644
--- a/flake8_isort.py
+++ b/flake8_isort.py
@@ -9,6 +9,8 @@ class Flake8Isort(object):
     version = '0.1'
     message = 'I001 found unsorted imports'
 
+    isort_config = False
+
     def __init__(self, tree, filename):
         self.filename = filename