diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index e9c9a0e..2aa02ae 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -597,7 +597,7 @@
         # either have to redirect all three or none. If the subprocess
         # user has only redirected one or two handles, we are
         # automatically creating PIPEs for the rest. We should close
-        # these after the process is started. See bug #1124861. 
+        # these after the process is started. See bug #1124861.
         if mswindows:
             if stdin is None and p2cwrite is not None:
                 os.close(p2cwrite)
@@ -629,7 +629,7 @@
         return data
 
 
-    def __del__(self):
+    def __del__(self, sys=sys):
         if not self._child_created:
             # We didn't get to successfully create a child process.
             return