diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index 7bcb1febef0dd06246642f58878cace232706500..dbf214ef7321f3688b0e92e1458efc14713e1b20 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -1339,7 +1339,7 @@ static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
 	return 0;
 }
 
-int pn533_data_exchange(struct nfc_dev *nfc_dev, u32 target_idx,
+static int pn533_data_exchange(struct nfc_dev *nfc_dev, u32 target_idx,
 						struct sk_buff *skb,
 						data_exchange_cb_t cb,
 						void *cb_context)