diff --git a/tools/releasetools/check_target_files_signatures.py b/tools/releasetools/check_target_files_signatures.py
index a7b35230ea..cdafb4b2e5 100755
--- a/tools/releasetools/check_target_files_signatures.py
+++ b/tools/releasetools/check_target_files_signatures.py
@@ -58,22 +58,6 @@ if sys.hexversion < 0x02070000:
 
 logger = logging.getLogger(__name__)
 
-# Work around a bug in Python's zipfile module that prevents opening of zipfiles
-# if any entry has an extra field of between 1 and 3 bytes (which is common with
-# zipaligned APKs). This overrides the ZipInfo._decodeExtra() method (which
-# contains the bug) with an empty version (since we don't need to decode the
-# extra field anyway).
-# Issue #14315: https://bugs.python.org/issue14315, fixed in Python 2.7.8 and
-# Python 3.5.0 alpha 1.
-
-
-class MyZipInfo(zipfile.ZipInfo):
-  def _decodeExtra(self):
-    pass
-
-
-zipfile.ZipInfo = MyZipInfo
-
 
 OPTIONS = common.OPTIONS