diff --git a/odoo-rpc.py b/odoo-rpc.py
index 309c9fb..27998f0 100755
--- a/odoo-rpc.py
+++ b/odoo-rpc.py
@@ -349,7 +349,7 @@ def flatten_stack( data ):
 			eprint( 'is a list')
 			for item in obj:
 				print( 'item: ', item, type(item))
-				if type(item) == str:
+				if type(item) in (str,unicode):
 					eprint( 'sub item is a str')
 					flat.append( item )
 				if type(item) == dict: