diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c
index 3641c9f..8693c1e 100644
--- a/drivers/serial/serial_sh.c
+++ b/drivers/serial/serial_sh.c
@@ -69,7 +69,7 @@
 	if (port->clk_mode == EXT_CLK) {
 		unsigned short dl = DL_VALUE(baudrate, clk);
 		sci_out(port, DL, dl);
-		/* Need wait: Clock * 1/dl $B!_(B 1/16 */
+		/* Need wait: Clock * 1/dl * 1/16 */
 		udelay((1000000 * dl * 16 / clk) * 1000 + 1);
 	} else {
 		sci_out(port, SCBRR, SCBRR_VALUE(baudrate, clk));