diff --git a/drivers/nvmem/sunplus-ocotp.c b/drivers/nvmem/sunplus-ocotp.c
index 2dc59c22eb55..c94134649714 100644
--- a/drivers/nvmem/sunplus-ocotp.c
+++ b/drivers/nvmem/sunplus-ocotp.c
@@ -71,7 +71,7 @@ struct sp_ocotp_data {
 	int size;
 };
 
-const struct sp_ocotp_data  sp_otp_v0 = {
+static const struct sp_ocotp_data sp_otp_v0 = {
 	.size = QAC628_OTP_SIZE,
 };