diff --git a/sys/dev/etherswitch/arswitch/arswitch_reg.c b/sys/dev/etherswitch/arswitch/arswitch_reg.c
index c9f16f21fff..cc29fa08522 100644
--- a/sys/dev/etherswitch/arswitch/arswitch_reg.c
+++ b/sys/dev/etherswitch/arswitch/arswitch_reg.c
@@ -184,11 +184,8 @@ arswitch_readreg(device_t dev, int addr)
 int
 arswitch_writereg(device_t dev, int addr, int value)
 {
-	struct arswitch_softc *sc;
 	uint16_t phy, reg;
 
-	sc = device_get_softc(dev);
-
 	arswitch_split_setpage(dev, addr, &phy, &reg);
 	return (arswitch_reg_write32(dev, 0x10 | phy, reg, value));
 }