diff --git a/drivers/staging/comedi/drivers/adv_pci1724.c b/drivers/staging/comedi/drivers/adv_pci1724.c
index f4c42eb031fcdf4afd1d6b72cd9da832e767924f..f8198efb1a0933f6c29abaad8e3105344c1fe083 100644
--- a/drivers/staging/comedi/drivers/adv_pci1724.c
+++ b/drivers/staging/comedi/drivers/adv_pci1724.c
@@ -72,13 +72,9 @@ supported PCI devices are configured as comedi devices automatically.
 #define PCI1724_SYNC_CTRL_DACSTAT	(1 << 1)
 #define PCI1724_SYNC_CTRL_SYN		(1 << 0)
 #define PCI1724_EEPROM_CTRL_REG		0x08
-#define PCI1724_SYNC_OUTPUT_TRIG_REG	0x0c
+#define PCI1724_SYNC_TRIG_REG		0x0c  /* any value works */
 #define PCI1724_BOARD_ID_REG		0x10
 
-enum sync_output_trigger_contents {
-	SYNC_TRIGGER_BITS = 0x0 /* any value works */
-};
-
 enum board_id_contents {
 	BOARD_ID_MASK = 0xf
 };