diff --git a/brename.py b/brename.py
index 6e31a67..99ebf74 100644
--- a/brename.py
+++ b/brename.py
@@ -29,7 +29,7 @@ underscore = '_'
 
 def brename(transformation, autoyes=False, recurse=False):
     if recurse:
-        spinal.walk_generator('.', yield_files=True, yield_directories=True)
+        walker = spinal.walk_generator('.', yield_files=True, yield_directories=True)
         olds = [x.absolute_path for x in walker]
     else:
         olds = [os.path.join(os.getcwd(), x) for x in os.listdir('.')]