diff --git a/sys/dev/etherswitch/e6000sw/e6000sw.c b/sys/dev/etherswitch/e6000sw/e6000sw.c
--- a/sys/dev/etherswitch/e6000sw/e6000sw.c
+++ b/sys/dev/etherswitch/e6000sw/e6000sw.c
@@ -1061,7 +1061,7 @@
 		device_printf(dev, "Wrong register address.\n");
 		return (EINVAL);
 	}
-	e6000sw_writereg(device_get_softc(dev), addr_reg / 5,
+	e6000sw_writereg(device_get_softc(dev), addr_reg / 32,
 	    addr_reg % 32, val);
 
 	return (0);