diff --git a/include/patty/ax25/sock.h b/include/patty/ax25/sock.h
index 5e24593..a003f29 100644
--- a/include/patty/ax25/sock.h
+++ b/include/patty/ax25/sock.h
@@ -94,9 +94,6 @@ void patty_ax25_sock_destroy(patty_ax25_sock *sock);
 int patty_ax25_sock_params_set(patty_ax25_sock *sock,
                                patty_ax25_params *params);
 
-int patty_ax25_sock_mode_set(patty_ax25_sock *sock,
-                             enum patty_ax25_sock_mode mode);
-
 char *patty_ax25_sock_pty(patty_ax25_sock *sock);
 
 int patty_ax25_sock_bind_if(patty_ax25_sock *sock,
diff --git a/src/sock.c b/src/sock.c
index 99edcff..a0c3f5e 100644
--- a/src/sock.c
+++ b/src/sock.c
@@ -239,17 +239,6 @@ error_invalid:
     return -1;
 }
 
-int patty_ax25_sock_mode_set(patty_ax25_sock *sock,
-                             enum patty_ax25_sock_mode mode) {
-    if (sock->mode == mode) {
-        return 0;
-    }
-
-    sock->mode = mode;
-
-    return 0;
-}
-
 char *patty_ax25_sock_pty(patty_ax25_sock *sock) {
     return sock->path;
 }