diff --git a/drivers/staging/comedi/drivers/addi_apci_3120.c b/drivers/staging/comedi/drivers/addi_apci_3120.c
index 2eb7ab5da7d7..9ff6580486e7 100644
--- a/drivers/staging/comedi/drivers/addi_apci_3120.c
+++ b/drivers/staging/comedi/drivers/addi_apci_3120.c
@@ -113,7 +113,6 @@ struct apci3120_private {
 	unsigned long amcc;
 	unsigned long addon;
 	unsigned int osc_base;
-	unsigned int ui_AiChannelList[32];
 	unsigned short us_UseDma;
 	unsigned char b_DmaDoubleBuffer;
 	unsigned int ui_DmaActualBuffer;