diff --git a/lib/pythonutil.py b/lib/pythonutil.py
index 3fd6ffb..bf5e1a4 100644
--- a/lib/pythonutil.py
+++ b/lib/pythonutil.py
@@ -5,7 +5,7 @@
 def calcDottedNetmask(mask):
     bits = 0
     for i in xrange(32 - mask, 32):
-        bits |= (1 << i)
-    packed_value = pack('!I', bits)
+        bits |= 1 << i
+    packed_value = pack("!I", bits)
     addr = inet_ntoa(packed_value)
     return addr