diff --git a/README.md b/README.md
index 50ebb29..f56de9a 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ Multicodec uses "protocol tables" to agree upon the mapping from one multicodec
 codec,              description,              code
 
 miscelaneous
-bin,                raw binary,               0x00
+bin,                raw binary,               0x55
 
 bases encodings
 base1,              unary,                    0x01