diff --git a/drivers/watchdog/riowd.c b/drivers/watchdog/riowd.c
index 04fd1ba..09cb183 100644
--- a/drivers/watchdog/riowd.c
+++ b/drivers/watchdog/riowd.c
@@ -230,7 +230,7 @@
 	return 0;
 }
 
-static struct of_device_id riowd_match[] = {
+static const struct of_device_id riowd_match[] = {
 	{
 		.name = "pmc",
 	},