diff --git a/websockify/websocket.py b/websockify/websocket.py
index 2475f99..d37fa71 100644
--- a/websockify/websocket.py
+++ b/websockify/websocket.py
@@ -767,7 +767,8 @@ Sec-WebSocket-Accept: %s\r
                     pid = err = 0
                     child_count = 0
 
-                    if multiprocessing and self.idle_timeout:
+                    if multiprocessing:
+                        # Collect zombie child processes
                         child_count = len(multiprocessing.active_children())
 
                     time_elapsed = time.time() - self.launch_time