diff --git a/lmwsip/run.py b/lmwsip/run.py
index 0da534a..78bfe03 100755
--- a/lmwsip/run.py
+++ b/lmwsip/run.py
@@ -34,7 +34,7 @@ def run(args):
         pass
 
 def main():
-    lastTime=LmwSip().lasttime("H10")
+    lastTime=LmwSip(host=None).lasttime("H10")
     parser = argparse.ArgumentParser(description="Run a sip file.")
     parser.add_argument("-u", "--unencrypted", action="store_true",
                         help="Run a sip connection without ssl")
diff --git a/lmwsip/tests/__init__.py b/lmwsip/tests/__init__.py
index b22731d..ce89f51 100755
--- a/lmwsip/tests/__init__.py
+++ b/lmwsip/tests/__init__.py
@@ -39,19 +39,19 @@ class lmwsipTest(unittest.TestCase):
         self.assertEqual(type(self.sip), lmwsip.LmwSip)
 
     def test_H1(self):
-        self.sip = lmwsip.LmwSip()
+        self.sip = lmwsip.LmwSip(host=None)
         self.assertEqual(self.sip.period('H1'), 1)
 
     def test_H10(self):
-        self.sip = lmwsip.LmwSip()
+        self.sip = lmwsip.LmwSip(host=None)
         self.assertEqual(self.sip.period('H10'), 10)
 
     def test_xHm0(self):
-        self.sip = lmwsip.LmwSip()
+        self.sip = lmwsip.LmwSip(host=None)
         self.assertEqual(self.sip.period('xHm0'), 10)
 
     def test_Noparm(self):
-        self.sip = lmwsip.LmwSip()
+        self.sip = lmwsip.LmwSip(host=None)
         with self.assertRaises(lmwsip.LmwParmWarn):
             self.assertEqual(self.sip.period('Noparm'), None)