diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index fd59f600094a..026294c6ccb8 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -781,7 +781,7 @@ static inline int uart_poll_timeout(struct uart_port *port)
 struct earlycon_device {
 	struct console *con;
 	struct uart_port port;
-	char options[16];		/* e.g., 115200n8 */
+	char options[32];		/* e.g., 115200n8 */
 	unsigned int baud;
 };