diff --git a/odoo-rpc.py b/odoo-rpc.py
index 8746f32..9d8d79b 100755
--- a/odoo-rpc.py
+++ b/odoo-rpc.py
@@ -479,7 +479,7 @@ def save( model, domains ):
 		model, id = muid.split('/')
 		if not model in to_browse:
 			to_browse[model] = [] 
-		to_browse[model] += id
+		to_browse[model].append( id )
 	
 	return to_browse