diff --git a/artiq/test/coredevice/test_performance.py b/artiq/test/coredevice/test_performance.py
index e5ccd7a98..071c5d27c 100644
--- a/artiq/test/coredevice/test_performance.py
+++ b/artiq/test/coredevice/test_performance.py
@@ -59,7 +59,7 @@ class TransferTest(ExperimentCase):
         exp = self.create(_Transfer)
         device_to_host_rate = exp.device_to_host()
         print(device_to_host_rate/(1024*1024), "MiB/s")
-        self.assertGreater(device_to_host_rate, 2.3e6)
+        self.assertGreater(device_to_host_rate, 2.2e6)
 
     def test_device_to_host_array(self):
         exp = self.create(_Transfer)