diff --git a/sound/soc/intel/atom/sst/sst.c b/sound/soc/intel/atom/sst/sst.c
index f9ba71315e335021b34aa18b4030a29b861bcac1..d97556a3772cc8377301508cb95544a1c921ef25 100644
--- a/sound/soc/intel/atom/sst/sst.c
+++ b/sound/soc/intel/atom/sst/sst.c
@@ -258,7 +258,7 @@ static ssize_t firmware_version_show(struct device *dev,
 
 }
 
-DEVICE_ATTR_RO(firmware_version);
+static DEVICE_ATTR_RO(firmware_version);
 
 static const struct attribute *sst_fw_version_attrs[] = {
 	&dev_attr_firmware_version.attr,