diff --git a/modules/initialize.py b/modules/initialize.py
index 77effcd..a4579df 100644
--- a/modules/initialize.py
+++ b/modules/initialize.py
@@ -266,14 +266,20 @@ def get_config(branchname):
     # allowed_hosts are the ip addresses and hostnames
     # that this instance is allowed to run on
 
-    dataobject.project.django.allowedhosts = list()
+    # use the Set variable type b/c we don't want duplicated
+    # of any of the ip addresses or host names
+    #
+    # this is because I found that sometimes "extendedname" is the same
+    # as host or as PROJECT_HOST.EXTENSION
+
+    dataobject.project.django.allowedhosts = set()
     _allowed = getattr(dataobject.project.django, 'allowedhosts')
-    _allowed.append(dataobject.project.extendedname)
-    _allowed.append(dataobject.project.host)
+    _allowed.add(dataobject.project.extendedname)
+    _allowed.add(dataobject.project.host)
 
     if 'allowed_hosts' in config['django']:
         for allowed in config['django']['allowed_hosts']:
-            _allowed.append(allowed)
+            _allowed.add(allowed)
 
     dataobject.addbranch('paths')