diff --git a/net/nfc/hci/llc_nop.c b/net/nfc/hci/llc_nop.c
index d91dd66a082..87b10291b40 100644
--- a/net/nfc/hci/llc_nop.c
+++ b/net/nfc/hci/llc_nop.c
@@ -93,7 +93,7 @@ static struct nfc_llc_ops llc_nop_ops = {
 	.xmit_from_hci = llc_nop_xmit_from_hci,
 };
 
-int nfc_llc_nop_register()
+int nfc_llc_nop_register(void)
 {
 	return nfc_llc_register(LLC_NOP_NAME, &llc_nop_ops);
 }
diff --git a/net/nfc/hci/llc_shdlc.c b/net/nfc/hci/llc_shdlc.c
index 3761c7490a6..d54bfc51c69 100644
--- a/net/nfc/hci/llc_shdlc.c
+++ b/net/nfc/hci/llc_shdlc.c
@@ -826,7 +826,7 @@ static struct nfc_llc_ops llc_shdlc_ops = {
 	.xmit_from_hci = llc_shdlc_xmit_from_hci,
 };
 
-int nfc_llc_shdlc_register()
+int nfc_llc_shdlc_register(void)
 {
 	return nfc_llc_register(LLC_SHDLC_NAME, &llc_shdlc_ops);
 }