diff --git a/steam/enums/common.py b/steam/enums/common.py
index 4ceed15..bbdbda6 100644
--- a/steam/enums/common.py
+++ b/steam/enums/common.py
@@ -350,8 +350,8 @@ class EClientPersonaStateFlag(SteamIntEnum):
 from sys import modules
 from enum import EnumMeta
 
-__all__ = map(lambda y: y.__name__,
+__all__ = list(map(lambda y: y.__name__,
               filter(lambda x: x.__class__ is EnumMeta, modules[__name__].__dict__.values()),
-              )
+              ))
 
 del modules, EnumMeta