diff --git a/ub b/ub
index cc63775..cf9caf0 100755
--- a/ub
+++ b/ub
@@ -7,4 +7,5 @@
 echo jz4740-mmc.0 >/sys/bus/platform/drivers/jz4740-mmc/unbind
 
 # AT86RF230 driver
-echo spi2.0 >/sys/bus/spi/drivers/at86rf230/unbind
+cd /sys/bus/spi/drivers/at86rf230
+echo spi*.0 >unbind