diff --git a/drivers/staging/comedi/drivers/amplc_pci230.c b/drivers/staging/comedi/drivers/amplc_pci230.c
index 0da5a4a47961..cd63706ea941 100644
--- a/drivers/staging/comedi/drivers/amplc_pci230.c
+++ b/drivers/staging/comedi/drivers/amplc_pci230.c
@@ -624,7 +624,7 @@ static inline void pci230_ao_write_nofifo(struct comedi_device *dev,
 
 	/* Write mangled datum to appropriate DACOUT register. */
 	outw(pci230_ao_mangle_datum(dev, datum),
-	     devpriv->daqio + ((chan) == 0) ? PCI230_DACOUT1 : PCI230_DACOUT2);
+	     devpriv->daqio + ((chan == 0) ? PCI230_DACOUT1 : PCI230_DACOUT2));
 }
 
 static inline void pci230_ao_write_fifo(struct comedi_device *dev,