diff --git a/beets/util/pipeline.py b/beets/util/pipeline.py
index 39bc7152e..71ac8ffe6 100644
--- a/beets/util/pipeline.py
+++ b/beets/util/pipeline.py
@@ -247,9 +247,6 @@ class FirstPipelineThread(PipelineThread):
         self.out_queue = out_queue
         self.out_queue.acquire()
 
-        self.abort_lock = Lock()
-        self.abort_flag = False
-
     def run(self):
         try:
             while True: