1 files changed, 1 insertions, 1 deletions

diff --git a/toxcore/TCP_server.h b/toxcore/TCP_server.h
index 252df9fa..bc159f73 100644
--- a/toxcore/TCP_server.h
+++ b/toxcore/TCP_server.h
@@ -100,7 +100,7 @@ void kill_TCP_server(TCP_Server *tcp_server);
  *
  * return length on success
  * return 0 if nothing has been read from socket.
- * return ~0 on failure.
+ * return -1 on failure.
  */
 uint16_t read_TCP_length(Socket sock);