diff --git a/drivers/char/tpm/tpm-sysfs.c b/drivers/char/tpm/tpm-sysfs.c
index c3503cb70a37..01730a27ae07 100644
--- a/drivers/char/tpm/tpm-sysfs.c
+++ b/drivers/char/tpm/tpm-sysfs.c
@@ -148,7 +148,7 @@ static ssize_t enabled_show(struct device *dev, struct device_attribute *attr,
 }
 static DEVICE_ATTR_RO(enabled);
 
-ssize_t active_show(struct device *dev, struct device_attribute *attr,
+static ssize_t active_show(struct device *dev, struct device_attribute *attr,
 		    char *buf)
 {
 	cap_t cap;