diff --git a/poky/bitbake/lib/bb/server/process.py b/poky/bitbake/lib/bb/server/process.py
index b593830..8fdcc66 100644
--- a/poky/bitbake/lib/bb/server/process.py
+++ b/poky/bitbake/lib/bb/server/process.py
@@ -661,7 +661,7 @@
         self.reader = ConnectionReader(readfd)
 
         self.t = threading.Thread()
-        self.t.setDaemon(True)
+        self.t.daemon = True
         self.t.run = self.startCallbackHandler
         self.t.start()