diff --git a/util/kojira b/util/kojira
index 96d27f5f..7c0d16dc 100755
--- a/util/kojira
+++ b/util/kojira
@@ -1077,7 +1077,7 @@ def start_currency_checker(session, repomgr):
     subsession = session.subsession()
     thread = threading.Thread(name='currencyChecker',
                               target=repomgr.currencyChecker, args=(subsession,))
-    thread.setDaemon(True)
+    thread.daemon = True
     thread.start()
     return thread
 
@@ -1086,7 +1086,7 @@ def start_external_currency_checker(session, repomgr):
     subsession = session.subsession()
     thread = threading.Thread(name='currencyExternalChecker',
                               target=repomgr.currencyExternalChecker, args=(subsession,))
-    thread.setDaemon(True)
+    thread.daemon = True
     thread.start()
     return thread
 
@@ -1095,7 +1095,7 @@ def start_regen_loop(session, repomgr):
     subsession = session.subsession()
     thread = threading.Thread(name='regenLoop',
                               target=repomgr.regenLoop, args=(subsession,))
-    thread.setDaemon(True)
+    thread.daemon = True
     thread.start()
     return thread
 
@@ -1104,7 +1104,7 @@ def start_delete_loop(session, repomgr):
     subsession = session.subsession()
     thread = threading.Thread(name='deleteLoop',
                               target=repomgr.deleteLoop, args=(subsession,))
-    thread.setDaemon(True)
+    thread.daemon = True
     thread.start()
     return thread
 
@@ -1113,7 +1113,7 @@ def start_rmtree_loop(session, repomgr):
     subsession = session.subsession()
     thread = threading.Thread(name='rmtreeLoop',
                               target=repomgr.rmtreeLoop, args=(subsession,))
-    thread.setDaemon(True)
+    thread.daemon = True
     thread.start()
     return thread
 
diff --git a/vm/kojivmd b/vm/kojivmd
index 0853bf52..b14845c9 100755
--- a/vm/kojivmd
+++ b/vm/kojivmd
@@ -850,7 +850,7 @@ class VMExecTask(BaseTaskHandler):
         self.server.register_function(self.verifyChecksum)
         thr = threading.Thread(name='task_%s_thread' % self.id,
                                target=self.server.handle_while_active)
-        thr.setDaemon(True)
+        thr.daemon = True
         thr.start()
 
     def handler(self, name, task_info, opts=None):
@@ -962,7 +962,7 @@ class VMTaskManager(TaskManager):
         self.server.register_function(self.registerVM)
         self.server.register_function(self.getPort)
         thr = threading.Thread(name='manager_thread', target=self.server.handle_while_active)
-        thr.setDaemon(True)
+        thr.daemon = True
         thr.start()
 
     def getCloneDisks(self, vm):