diff --git a/EduNetworkBuilder/TrippleDESDocumentEncryption.cs b/EduNetworkBuilder/TrippleDESDocumentEncryption.cs
index d375c6f..1d34709 100644
--- a/EduNetworkBuilder/TrippleDESDocumentEncryption.cs
+++ b/EduNetworkBuilder/TrippleDESDocumentEncryption.cs
@@ -20,7 +20,7 @@ namespace EduNetworkBuilder
         /// <summary>
         /// The characters we use for passwords and salts.
         /// </summary>
-        protected const string PWChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890_.!#$^*";
+        protected const string PWChars = "abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ234567890_.!#$^*";
 
         public TrippleDESDocumentEncryption(XmlDocument Doc, TripleDES Key)
         {