diff --git a/Lib/pre.py b/Lib/pre.py
index 35d3e3a..30f0491 100644
--- a/Lib/pre.py
+++ b/Lib/pre.py
@@ -87,6 +87,8 @@
 import sys
 from pcre import *
 
+__all__ = ["match","search","sub","subn","split","findall","escape","compile"]
+
 #
 # First, the public part of the interface:
 #