diff --git a/bitbake/lib/bb/server/process.py b/bitbake/lib/bb/server/process.py
index 45f2e86319..43061eb3c8 100644
--- a/bitbake/lib/bb/server/process.py
+++ b/bitbake/lib/bb/server/process.py
@@ -587,7 +587,7 @@ class BBUIEventQueue:
         self.reader = ConnectionReader(readfd)
 
         self.t = threading.Thread()
-        self.t.setDaemon(True)
+        self.t.daemon = True
         self.t.run = self.startCallbackHandler
         self.t.start()