diff --git a/drivers/usb/typec/tcpm/tcpci.c b/drivers/usb/typec/tcpm/tcpci.c
index 3392c0292c1b..bb47e5adcffa 100644
--- a/drivers/usb/typec/tcpm/tcpci.c
+++ b/drivers/usb/typec/tcpm/tcpci.c
@@ -125,7 +125,8 @@ static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc)
 	return 0;
 }
 
-int tcpci_apply_rc(struct tcpc_dev *tcpc, enum typec_cc_status cc, enum typec_cc_polarity polarity)
+static int tcpci_apply_rc(struct tcpc_dev *tcpc, enum typec_cc_status cc,
+			  enum typec_cc_polarity polarity)
 {
 	struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
 	unsigned int reg;