diff --git a/drivers/staging/comedi/drivers/addi_apci_3501.c b/drivers/staging/comedi/drivers/addi_apci_3501.c
index 0b7a500e390f..1408df3fcec4 100644
--- a/drivers/staging/comedi/drivers/addi_apci_3501.c
+++ b/drivers/staging/comedi/drivers/addi_apci_3501.c
@@ -187,8 +187,6 @@ static int apci3501_auto_attach(struct comedi_device *dev,
 
 	dev->iobase = pci_resource_start(pcidev, 1);
 	devpriv->i_IobaseAmcc = pci_resource_start(pcidev, 0);
-	devpriv->i_IobaseAddon = pci_resource_start(pcidev, 2);
-	devpriv->i_IobaseReserved = pci_resource_start(pcidev, 3);
 
 	/* Initialize parameters that can be overridden in EEPROM */
 	devpriv->s_EeParameters.i_NbrAoChannel = this_board->i_NbrAoChannel;