diff --git a/Lib/sched.py b/Lib/sched.py
index 2f8df05..7c3235e 100644
--- a/Lib/sched.py
+++ b/Lib/sched.py
@@ -72,7 +72,7 @@
 
     def empty(self):
         """Check whether the queue is empty."""
-        return not not self.queue
+        return not self.queue
 
     def run(self):
         """Execute events until the queue is empty.