diff --git a/python/google/protobuf/descriptor_pool.py b/python/google/protobuf/descriptor_pool.py
index a6a886c35c..6a1b4b5e52 100644
--- a/python/google/protobuf/descriptor_pool.py
+++ b/python/google/protobuf/descriptor_pool.py
@@ -57,8 +57,6 @@ directly instead of this class.
 
 __author__ = 'matthewtoia@google.com (Matt Toia)'
 
-import sys
-
 from google.protobuf import descriptor
 from google.protobuf import descriptor_database
 from google.protobuf import text_encoding