diff --git a/docs/bytecode.md b/docs/bytecode.md
index e3dafec..c9b5a22 100644
--- a/docs/bytecode.md
+++ b/docs/bytecode.md
@@ -24,8 +24,9 @@ Once a JAPL source file (i.e. one with a ".jpl" extension, without quotes) has b
 
 An object file starts with the headers, namely:
 
+- The literal string `"JAPL_BYTECODE"` (without quotes)
 - A 3-byte version header composed by 3 unsigned integers representing the major, minor and patch version of the compiler used to generate the file, respectively. JAPL follows the SemVer standard for versioning
-- A 32 bytes hexadecimal string, pinpointing the version of the compiler down to the exact commit hash in the JAPL repository, particularly useful when testing development versions
+- A 41 bytes hexadecimal string, pinpointing the version of the compiler down to the exact commit hash in the JAPL repository, particularly useful when testing development versions
 - An 8 byte (64 bit) UNIX timestamp (starting from the Unix Epoch of January 1st 1970 at 00:00), representing the date and time when the file was created
 - A 32 bytes SHA256 checksum of the source file's contents, used to track file changes