diff --git a/doc/protocol.md b/doc/protocol.md
index ac6b505..0af1a6e 100644
--- a/doc/protocol.md
+++ b/doc/protocol.md
@@ -1,6 +1,6 @@
 # P2P-JAVA-PROJECT version 1.2 (Binary protocol for step 2+)
 
-All strings in the datagram are utf-8 encoded.
+All strings in the datagram are utf-8 encoded. All numerical values are big endian.
 
 ```text