diff --git a/test/test_buffer.py b/test/test_buffer.py
index 6cb2295..5a71f90 100644
--- a/test/test_buffer.py
+++ b/test/test_buffer.py
@@ -2,7 +2,6 @@
 # coding: utf-8
 
 from msgpack import packb, unpackb
-import sys
 
 
 def test_unpack_buffer():