diff --git a/doc/proto_00000402.txt b/doc/proto_00000402.txt
index f1dbad9..6a334ec 100644
--- a/doc/proto_00000402.txt
+++ b/doc/proto_00000402.txt
@@ -1,4 +1,4 @@
-Detailed specification of protocol in version 00000403
+Detailed specification of protocol in version 00000402
 ======================================================
 
 CMC = 2 byte Cache Miss Counter, increased every time it is used