diff --git a/include/socketcan_netlink.h b/include/socketcan_netlink.h
index 330d6da..9f8a3a9 100644
--- a/include/socketcan_netlink.h
+++ b/include/socketcan_netlink.h
@@ -27,9 +27,6 @@
 #define GET_BITTIMING 3
 #define GET_CTRLMODE 4
 
-int netif_down(int fd, const char *name);
-int netif_up(int fd, const char *name);
-
 int scan_set_restart(const char *name);
 int scan_set_bitrate(const char *name, __u32 bitrate);
 int scan_set_restart_ms(const char *name, __u32 restart_ms);
diff --git a/src/socketcan_netlink.c b/src/socketcan_netlink.c
index 405e234..d13c8df 100644
--- a/src/socketcan_netlink.c
+++ b/src/socketcan_netlink.c
@@ -459,6 +459,16 @@ static int do_set_nl_link(int fd, __u8 if_state, const char *name,
 	return send_mod_request(fd, &req.n);
 }
 
+static int netif_up(int fd, const char *name)
+{
+	return do_set_nl_link(fd, IF_UP, name, NULL);
+}
+
+static int netif_down(int fd, const char *name)
+{
+	return do_set_nl_link(fd, IF_DOWN, name, NULL);
+}
+
 static int set_link(const char *name, struct req_info *req_info)
 {
 	int fd;
@@ -486,16 +496,6 @@ err_out:
 	return err;
 }
 
-int netif_up(int fd, const char *name)
-{
-	return do_set_nl_link(fd, IF_UP, name, NULL);
-}
-
-int netif_down(int fd, const char *name)
-{
-	return do_set_nl_link(fd, IF_DOWN, name, NULL);
-}
-
 int scan_set_restart(const char *name)
 {
 	int fd;