diff --git a/artiq/test/coredevice/test_spi.py b/artiq/test/coredevice/test_spi.py
index 0faf4677f..02429cf09 100644
--- a/artiq/test/coredevice/test_spi.py
+++ b/artiq/test/coredevice/test_spi.py
@@ -1,7 +1,7 @@
 import unittest
 from artiq.experiment import *
 from artiq.test.hardware_testbench import ExperimentCase
-from artiq.language.core import (kernel, delay_mu, delay)
+from artiq.language.core import kernel
 from artiq.language.units import us
 from artiq.coredevice import spi2 as spi