diff --git a/pyrelacs/app.py b/pyrelacs/app.py
index 6e8d799..288f8b1 100644
--- a/pyrelacs/app.py
+++ b/pyrelacs/app.py
@@ -19,7 +19,6 @@ from IPython import embed
 import numpy as np
 
 from pyrelacs.util.logging import config_logging
-from pyrelacs.daq_thread import Worker
 
 log = config_logging()