diff --git a/src/debug/gosym/symtab.go b/src/debug/gosym/symtab.go
index a995209..a84b7f6 100644
--- a/src/debug/gosym/symtab.go
+++ b/src/debug/gosym/symtab.go
@@ -7,11 +7,6 @@
 // by the gc compilers.
 package gosym
 
-// The table format is a variant of the format used in Plan 9's a.out
-// format, documented at https://9p.io/magic/man2html/6/a.out.
-// The best reference for the differences between the Plan 9 format
-// and the Go format is the runtime source, specifically ../../runtime/symtab.c.
-
 import (
 	"bytes"
 	"encoding/binary"