diff --git a/drivers/tty/serial/mrst_max3110.c b/drivers/tty/serial/mrst_max3110.c
index b62857bf2fdb..37e13c3d91d9 100644
--- a/drivers/tty/serial/mrst_max3110.c
+++ b/drivers/tty/serial/mrst_max3110.c
@@ -51,7 +51,7 @@
 struct uart_max3110 {
 	struct uart_port port;
 	struct spi_device *spi;
-	char name[24];
+	char name[SPI_NAME_SIZE];
 
 	wait_queue_head_t wq;
 	struct task_struct *main_thread;