diff --git a/tablib/core.py b/tablib/core.py
index cb192ae..f386136 100644
--- a/tablib/core.py
+++ b/tablib/core.py
@@ -548,6 +548,7 @@ class Dataset(object):
 
         Import assumes (for now) that headers exist.
         """
+        pass
 
     @property
     def html():