diff --git a/artiq/coredevice/novogorny.py b/artiq/coredevice/novogorny.py
index 8892073af..ae8b59d21 100644
--- a/artiq/coredevice/novogorny.py
+++ b/artiq/coredevice/novogorny.py
@@ -1,11 +1,8 @@
-from numpy import int32, int64
 
 from artiq.language.core import kernel, delay, portable
-from artiq.language.units import us, ns
-from artiq.coredevice.ad9912_reg import *
+from artiq.language.units import ns
 
 from artiq.coredevice import spi2 as spi
-from artiq.coredevice import urukul
 
 
 SPI_CONFIG = (0*spi.SPI_OFFLINE | 0*spi.SPI_END |