diff --git a/target/linux/generic/files/drivers/net/phy/b53/b53_common.c b/target/linux/generic/files/drivers/net/phy/b53/b53_common.c
index f5dd068a1b..f6a5418c3f 100644
--- a/target/linux/generic/files/drivers/net/phy/b53/b53_common.c
+++ b/target/linux/generic/files/drivers/net/phy/b53/b53_common.c
@@ -459,7 +459,7 @@ static int b53_apply(struct b53_device *dev)
 	return 0;
 }
 
-void b53_switch_reset_gpio(struct b53_device *dev)
+static void b53_switch_reset_gpio(struct b53_device *dev)
 {
 	int gpio = dev->reset_gpio;