diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c
index 7fd6aaaacd8e530ee5355110ecdc48e1ab5d51d8..9b27d34ad49e9e8bad6589de0744021b9624fa7b 100644
--- a/drivers/tty/serial/mux.c
+++ b/drivers/tty/serial/mux.c
@@ -29,7 +29,7 @@
 #include <asm/irq.h>
 #include <asm/parisc-device.h>
 
-#ifdef CONFIG_MAGIC_SYSRQ
+#if defined(CONFIG_SERIAL_MUX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
 #include <linux/sysrq.h>
 #define SUPPORT_SYSRQ
 #endif