diff --git a/cheroot/workers/threadpool.py b/cheroot/workers/threadpool.py
index 915934ccea..57e6588dd6 100644
--- a/cheroot/workers/threadpool.py
+++ b/cheroot/workers/threadpool.py
@@ -320,7 +320,7 @@ def _clear_threads(self):
         return (
             thread
             for thread in threads
-            if thread is not threading.currentThread()
+            if thread is not threading.current_thread()
         )
 
     @property