diff --git a/mt.py b/mt.py
index 763bf1c..84b9868 100644
--- a/mt.py
+++ b/mt.py
@@ -26,10 +26,12 @@ class mt():
             self.__results = manager.list()
             self.__progress = mp.Value("i", 0)
             self.__lock = mp.Lock()
+            self.__keepalive = manager.list([0])
         else:
             self.__results = []
             self.__progress = 0
             self.__lock = th.Lock()
+            self.__keepalive = [0]
         self.__progressinterval = progressinterval
         for i in range(self.__threadcount):
             self.__results.append([])
@@ -70,6 +72,7 @@ class mt():
                 self.__inc_progress(len(part))
                 if self.__comment is not None:
                     print("\r" + self.__comment + ": " + str(self.__get_progress()) + "/" + str(len(self.__data)) + " ...", end='', flush=True)
+            self.__keepalive[0] = 0
 
         with self.__lock:
             self.__results[i] = results
@@ -114,6 +117,7 @@ class mt():
                 self.__inc_progress(len(part))
                 if self.__comment is not None:
                     print("\r" + self.__comment + ": " + str(self.__get_progress()) + "/" + str(len(self.__data)) + " ...", end='', flush=True)
+            self.__keepalive[0] = 0
 
         with self.__lock:
             self.__results[i] = results
@@ -160,6 +164,7 @@ class mt():
                 self.__inc_progress(len(part))
                 if self.__comment is not None:
                     print("\r" + self.__comment + ": " + str(self.__get_progress()) + "/" + str(len(self.__data)) + " ...", end='', flush=True)
+            self.__keepalive[0] = 0
 
         with self.__lock:
             self.__results[i] = val