1 files changed, 1 insertions, 2 deletions

diff --git a/bitbake/lib/bb/cache.py b/bitbake/lib/bb/cache.py
index 7d7e66ebd2..82efada67d 100644
--- a/bitbake/lib/bb/cache.py
+++ b/bitbake/lib/bb/cache.py
@@ -31,7 +31,6 @@
 import os, re
 import bb.data
 import bb.utils
-from sets import Set
 
 try:
     import cPickle as pickle
@@ -431,6 +430,6 @@ class CacheData:
         (set elsewhere)
         """
         self.ignored_dependencies = []
-        self.world_target = Set()
+        self.world_target = set()
         self.bbfile_priority = {}
         self.bbfile_config_priorities = []