diff --git a/lib/daemon.py b/lib/daemon.py
index 8e69b14a0720529e9a024e3dc518ed7535800ff3..26f9cdfe742d61e4313027a9ac6acc3ecbcdc112 100644
--- a/lib/daemon.py
+++ b/lib/daemon.py
@@ -132,6 +132,7 @@ class Mainloop(object):
           # Calculate timeout again if required
           if timeout_needs_update:
             timeout = self._CalcTimeout(time.time())
+            timeout_needs_update = False
 
           # Wait for I/O events
           try: