diff --git a/aider/watch.py b/aider/watch.py
index 5a305882e..42f37dbe9 100644
--- a/aider/watch.py
+++ b/aider/watch.py
@@ -128,7 +128,7 @@ class FileWatcher:
                 else:
                     roots_to_watch = [str(self.root)]
 
-                dump("tmp.benchmarks" in roots_to_watch)
+                dump(list(d for d in roots_to_watch if "tmp.benchmarks" in d))
                 for changes in watch(
                     *roots_to_watch, watch_filter=self.filter_func, stop_event=self.stop_event
                 ):