diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 819fc3e..64ff6a5 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -1191,7 +1191,7 @@ config SERIAL_VR41XX
 
 config SERIAL_VR41XX_CONSOLE
 	bool "Enable NEC VR4100 series Serial Interface Unit console"
-	depends on SERIAL_VR41XX
+	depends on SERIAL_VR41XX=y
 	select SERIAL_CORE_CONSOLE
 	help
 	  If you have a NEC VR4100 series processor and you want to use
diff --git a/drivers/serial/vr41xx_siu.c b/drivers/serial/vr41xx_siu.c
index 0b35097..6fd51b0 100644
--- a/drivers/serial/vr41xx_siu.c
+++ b/drivers/serial/vr41xx_siu.c
@@ -65,7 +65,9 @@ static struct uart_port siu_uart_ports[SIU_PORTS_MAX] = {
 	},
 };
 
+#ifdef CONFIG_SERIAL_VR41XX_CONSOLE
 static uint8_t lsr_break_flag[SIU_PORTS_MAX];
+#endif
 
 #define siu_read(port, offset)		readb((port)->membase + (offset))
 #define siu_write(port, offset, value)	writeb((value), (port)->membase + (offset))