diff --git a/blogo/plugin_prefixedsourcer.go b/blogo/plugin_prefixedsourcer.go
index 351b5f7..fababca 100644
--- a/blogo/plugin_prefixedsourcer.go
+++ b/blogo/plugin_prefixedsourcer.go
@@ -16,8 +16,6 @@
 package blogo
 
 import (
-	"crypto/rand"
-	"encoding/hex"
 	"fmt"
 	"io"
 	"io/fs"
@@ -40,12 +38,9 @@ type prefixedSourcer struct {
 	acceptDuplicated bool
 
 	panicOnInit       bool
-	skipOnHexError    bool
 	skipOnSourceError bool
 	skipOnFSError     bool
 
-	hexFunc HexFunc
-
 	log *slog.Logger
 }
 
@@ -58,21 +53,9 @@ type PrefixedSourcerOpts struct {
 	NotSkipOnSourceError bool
 	NotSkipOnFSError     bool
 
-	HexFunc HexFunc
-
 	Logger *slog.Logger
 }
 
-type HexFunc = func(n int) (string, error)
-
-func hexFunc(n int) (string, error) {
-	bytes := make([]byte, n)
-	if _, err := rand.Read(bytes); err != nil {
-		return "", err
-	}
-	return hex.EncodeToString(bytes), nil
-}
-
 func NewPrefixedSourcer(opts ...PrefixedSourcerOpts) PrefixedSourcer {
 	opt := PrefixedSourcerOpts{}
 	if len(opts) > 0 {
@@ -83,10 +66,6 @@ func NewPrefixedSourcer(opts ...PrefixedSourcerOpts) PrefixedSourcer {
 		opt.PrefixSeparator = "/"
 	}
 
-	if opt.HexFunc == nil {
-		opt.HexFunc = hexFunc
-	}
-
 	if opt.Logger == nil {
 		opt.Logger = slog.New(slog.NewTextHandler(io.Discard, &slog.HandlerOptions{}))
 	}