diff --git a/pysat/__init__.py b/pysat/__init__.py
index <HASH>..<HASH> 100644
--- a/pysat/__init__.py
+++ b/pysat/__init__.py
@@ -2,6 +2,7 @@
 from __future__ import print_function
 from __future__ import absolute_import
 import os
+import pysatCDF
 
 # get home directory
 home_dir = os.path.expanduser('~')
Testing build of pysatCDF on travis