diff --git a/gologger.go b/gologger.go
index 004ce13..0072e03 100644
--- a/gologger.go
+++ b/gologger.go
@@ -90,9 +90,6 @@ func (l *Logger) Close() {
 func (l *Logger) splitEventLog() {
 	timestamp := "_" + strconv.FormatInt(time.Now().Unix(), 10)
 
-	muEv.Lock()
-	defer muEv.Unlock()
-
 	evfstats, _ := l.eventf.Stat()
 	if evfstats.Size() >= MaxLogFileSize100KB {
 		// close old file
@@ -115,9 +112,6 @@ func (l *Logger) splitEventLog() {
 func (l *Logger) splitErrorLog() {
 	timestamp := "_" + strconv.FormatInt(time.Now().Unix(), 10)
 
-	muEr.Lock()
-	defer muEr.Unlock()
-
 	erfstats, _ := l.errorf.Stat()
 	if erfstats.Size() >= MaxLogFileSize100KB {
 		// close old file