diff --git a/Lib/pickle.py b/Lib/pickle.py
index 4cc6629d532..7e8e6656683 100644
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -103,6 +103,7 @@ def __init__(self, value):
 BINFLOAT        = 'G'
 
 __all__.extend([x for x in dir() if re.match("[A-Z][A-Z0-9_]+$",x)])
+del x
 
 class Pickler: