diff --git a/daemon/media_socket.c b/daemon/media_socket.c
index e357cf0ad..f37f18071 100644
--- a/daemon/media_socket.c
+++ b/daemon/media_socket.c
@@ -3991,8 +3991,6 @@ stream_fd *stream_fd_lookup(const endpoint_t *ep) {
 }
 
 void stream_fd_release(stream_fd *sfd) {
-	if (!sfd)
-		return;
 	if (sfd->socket.fd == -1)
 		return;
 
diff --git a/include/media_socket.h b/include/media_socket.h
index 318b2ce92..c60269cf6 100644
--- a/include/media_socket.h
+++ b/include/media_socket.h
@@ -392,7 +392,10 @@ bool get_consecutive_ports(socket_port_q *out, unsigned int num_ports, struct lo
 
 stream_fd *stream_fd_new(struct socket_port_link *, call_t *call, struct local_intf *lif);
 stream_fd *stream_fd_lookup(const endpoint_t *);
+
+__attribute__((nonnull(1)))
 void stream_fd_release(stream_fd *);
+
 enum thread_looper_action release_closed_sockets(void);
 void append_thread_lpr_to_glob_lpr(void);