1 files changed, 3 insertions, 4 deletions
diff --git a/BaseTools/Source/Python/build/build.py b/BaseTools/Source/Python/build/build.py
index 7715cfa52a..2629d6046d 100644
--- a/BaseTools/Source/Python/build/build.py
+++ b/BaseTools/Source/Python/build/build.py
@@ -25,7 +25,6 @@ import time
 import platform
 import traceback
 import encodings.ascii
-import itertools
 import multiprocessing
 
 from struct import *
@@ -1172,9 +1171,9 @@ class Build():
                 f = open(PrebuildEnvFile)
                 envs = f.readlines()
                 f.close()
-                envs = itertools.imap(lambda l: l.split('=', 1), envs)
-                envs = itertools.ifilter(lambda l: len(l) == 2, envs)
-                envs = itertools.imap(lambda l: [i.strip() for i in l], envs)
+                envs = map(lambda l: l.split('=', 1), envs)
+                envs = filter(lambda l: len(l) == 2, envs)
+                envs = map(lambda l: [i.strip() for i in l], envs)
                 os.environ.update(dict(envs))
             EdkLogger.info("\n- Prebuild Done -\n")