diff --git a/mt.py b/mt.py
index 84b9868..5f44052 100644
--- a/mt.py
+++ b/mt.py
@@ -22,11 +22,11 @@ class mt():
         self.__threads = []
         if useprocesses:
             mp.set_start_method('fork', True)
-            manager = mp.Manager()
-            self.__results = manager.list()
+            self.__manager = mp.Manager()
+            self.__results = self.__manager.list()
             self.__progress = mp.Value("i", 0)
             self.__lock = mp.Lock()
-            self.__keepalive = manager.list([0])
+            self.__keepalive = self.__manager.list([0])
         else:
             self.__results = []
             self.__progress = 0