diff --git a/artiq/frontend/pdq2_client.py b/artiq/frontend/pdq2_client.py
index c0bef9aa5..d8c7955ed 100755
--- a/artiq/frontend/pdq2_client.py
+++ b/artiq/frontend/pdq2_client.py
@@ -65,8 +65,6 @@ def main():
     dev.cmd("DCM", args.dcm)
     freq = 100e6 if args.dcm else 50e6
     dev.set_freq(freq)
-    num_channels = dev.get_num_channels()
-    num_frames = dev.get_num_frames()
     times = eval(args.times, globals(), {})
     voltages = eval(args.voltages, globals(), dict(t=times))