diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 381b2e22fa96..fe53e9c2c9b4 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -322,7 +322,7 @@ struct slgt_info {
 
 };
 
-static MGSL_PARAMS default_params = {
+static const MGSL_PARAMS default_params = {
 	.mode            = MGSL_MODE_HDLC,
 	.loopback        = 0,
 	.flags           = HDLC_FLAG_UNDERRUN_ABORT15,