1 files changed, 1 insertions, 1 deletions

diff --git a/bitbake/lib/bb/data_smart.py b/bitbake/lib/bb/data_smart.py
index ec4e9210b2..ea1347837c 100644
--- a/bitbake/lib/bb/data_smart.py
+++ b/bitbake/lib/bb/data_smart.py
@@ -146,7 +146,7 @@ class DataSmart(MutableMapping):
 
         return varparse
 
-    def expand(self, s, varname):
+    def expand(self, s, varname = None):
         return self.expandWithRefs(s, varname).value