diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c
index 8dccdd193d94..7ff0b0fc37e7 100644
--- a/arch/um/drivers/stdio_console.c
+++ b/arch/um/drivers/stdio_console.c
@@ -69,6 +69,7 @@ static struct line_driver driver = {
 	.write_irq 		= CONSOLE_WRITE_IRQ,
 	.write_irq_name 	= "console-write",
 	.mc  = {
+		.list		= LIST_HEAD_INIT(driver.mc.list),
 		.name  		= "con",
 		.config 	= con_config,
 		.get_config 	= con_get_config,