diff --git a/go.mod b/go.mod
index 0153ac7..b48c409 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module github.com/z26100/log-go
 
-go 1.15
+go 1.22
diff --git a/log.go b/log.go
index e05e73e..036b3cc 100644
--- a/log.go
+++ b/log.go
@@ -2,13 +2,12 @@ package log
 
 import (
 	"log"
-	"net/http"
 )
 
-type LogLevelType int
+type LevelType int
 
 const (
-	TRACE LogLevelType = iota
+	TRACE LevelType = iota
 	DEBUG
 	INFO
 	WARN
@@ -20,7 +19,7 @@ var (
 	LogLevel = INFO
 )
 
-func (l LogLevelType) String() string {
+func (l LevelType) String() string {
 	switch l {
 	case TRACE:
 		return "TRACE"
@@ -117,9 +116,3 @@ func Error(args ...interface{}) {
 func Fatal(err error) {
 	log.Fatal(err)
 }
-func Handler(handler http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		Debugln("http request", r.Method, r.URL)
-		handler.ServeHTTP(w, r)
-	})
-}