log.go | 4 ++--

diff --git a/log.go b/log.go
index 2c175b00dbc14c793d5bb6cb256ee1e09d09122f62ffbe4c7fede885b2e7d989..4fe157bfbd1c2e8e5583fc1c479054e00b13b2b64e22934d6071b8d9c81e15c3 100644
--- a/log.go
+++ b/log.go
@@ -56,12 +56,12 @@ 			format = FormatMeta
 		} else {
 			format = FormatMsg
 		}
-		_, err = fd.WriteString(fmt.Sprintf(
+		_, err = fmt.Fprintf(fd,
 			format,
 			time.Now().Format(time.RFC3339),
 			event.who,
 			event.what,
-		))
+		)
 		fd.Close()
 		if err != nil {
 			log.Println("error writing to logfile", logfile, err)