diff --git a/lldb/test/macosx/add-dsym/TestAddDsymMidExecutionCommand.py b/lldb/test/macosx/add-dsym/TestAddDsymMidExecutionCommand.py
index e74c37f..1fc8e59 100644
--- a/lldb/test/macosx/add-dsym/TestAddDsymMidExecutionCommand.py
+++ b/lldb/test/macosx/add-dsym/TestAddDsymMidExecutionCommand.py
@@ -4,6 +4,7 @@
 import unittest2
 import lldb
 import pexpect
+import sys
 from lldbtest import *
 
 @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")