diff --git a/i3pystatus/shell.py b/i3pystatus/shell.py
index 54a1d93..571521f 100644
--- a/i3pystatus/shell.py
+++ b/i3pystatus/shell.py
@@ -1,6 +1,7 @@
 from i3pystatus import IntervalModule
 from subprocess import check_output, CalledProcessError
 
+
 class Shell(IntervalModule):
     """
     Shows output of shell command