diff --git a/README.md b/README.md
index 6a681f4..76a57e6 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,21 @@ This is still under development. Installing the proxy needs manual changes to JS
 See [this page](https://developer.chrome.com/extensions/nativeMessaging) for further information.
 
 keepassxc-proxy listens stdin from keepassxc-browser extension and transfers the data to Unix domain socket `/tmp/kpxc_server` which KeePassXC listens.
+
+```
+Copyright (C) 2017 Sami Vänttinen <sami.vanttinen@protonmail.com>
+Copyright (C) 2017 Andy Brandt <andy@brandt.tech>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+```
diff --git a/src/main.rs b/src/main.rs
index ad6578c..51b9e63 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,10 +10,10 @@ mod proxy_socket;
 
 use proxy_socket::ProxySocket;
 
-const BUFFER_SIZE: u32 = 1024 * 16;
+const BUFFER_SIZE: u32 = 1024 * 16;	 // 1024 ^ 2 is the maximum
 
 fn valid_length(length: u32) -> bool {
-	return length > 0 && length <= 4096; // 1024 ^ 2 is the maximum
+	return length > 0 && length <= BUFFER_SIZE;
 }
 
 fn read_header() -> u32 {