diff --git a/pysolr.py b/pysolr.py
index 1205bfa..d29c348 100644
--- a/pysolr.py
+++ b/pysolr.py
@@ -134,7 +134,7 @@ def __init__(self, url):
         netloc = netloc.split(':')
         self.host = netloc[0]
         if len(netloc) == 1:
-            self.host = netloc[0]
+            self.host, self.port = netloc[0], None
         else:
             self.host, self.port = netloc
         self.path = path.rstrip('/')