Index: smart-1.4.1/smart/transaction.py
===================================================================
--- smart-1.4.1.orig/smart/transaction.py	2012-12-05 18:02:03.061062143 +0100
+++ smart-1.4.1/smart/transaction.py	2013-05-17 11:52:12.300436720 +0200
@@ -979,7 +979,8 @@
         for pkg in changeset.keys():
 
             op = changeset.get(pkg)
-            if (op and op != origchangeset.get(pkg) and
+	    origpkgop = origchangeset.get(pkg)
+            if (op and origpkgop != None and op != origpkgop and
                 pkg not in locked and pkg not in lockedstates):
 
                 try: