diff --git a/godns.go b/godns.go
index a941e46..26c2767 100644
--- a/godns.go
+++ b/godns.go
@@ -11,9 +11,9 @@ import (
 )
 
 const (
-	//Max allowed panic times
+	//PANIC_MAX is the max allowed panic times
 	PANIC_MAX = 5
-	//Minute
+	//INTERVAL is minute
 	INTERVAL = 5
 )
 
diff --git a/logger.go b/logger.go
index a3a3a52..50e802d 100644
--- a/logger.go
+++ b/logger.go
@@ -254,10 +254,10 @@ func (logger *Logger) logPrintf(lv int, format string, args ...interface{}) {
 }
 
 //Close fd
-func (log *Logger) Close() {
-	if log.fd != nil {
-		log.Flush()
-		log.fd.Close()
+func (logger *Logger) Close() {
+	if logger.fd != nil {
+		logger.Flush()
+		logger.fd.Close()
 	}
 }