1 files changed, 1 insertions, 1 deletions

diff --git a/scripts/lib/wic/partition.py b/scripts/lib/wic/partition.py
index a25834048e..09e491dd49 100644
--- a/scripts/lib/wic/partition.py
+++ b/scripts/lib/wic/partition.py
@@ -171,7 +171,7 @@ class Partition():
             # Split sourceparams string of the form key1=val1[,key2=val2,...]
             # into a dict.  Also accepts valueless keys i.e. without =
             splitted = self.sourceparams.split(',')
-            srcparams_dict = dict(par.split('=', 1) for par in splitted if par)
+            srcparams_dict = dict((par.split('=', 1) + [None])[:2] for par in splitted if par)
 
         plugin = PluginMgr.get_plugins('source')[self.source]
         plugin.do_configure_partition(self, srcparams_dict, creator,