diff --git a/htdocs/core/modules/syslog/mod_syslog_file.php b/htdocs/core/modules/syslog/mod_syslog_file.php
index 688f963f455..b8cc257a7d9 100644
--- a/htdocs/core/modules/syslog/mod_syslog_file.php
+++ b/htdocs/core/modules/syslog/mod_syslog_file.php
@@ -166,7 +166,7 @@ class mod_syslog_file extends LogHandler implements LogHandlerInterface
 				$this->lastTime = $now;
 			}
 
-			$message = dol_print_date(time(),"%Y-%m-%d %H:%M:%S").$delay." ".sprintf("%-7s", $logLevels[$content['level']])." ".sprintf("%-15s", $content['ip'])." ".($this->ident>0?str_pad('',$this->ident,' '):'').$content['message'];
+			$message = strftime("%Y-%m-%d %H:%M:%S", time()).$delay." ".sprintf("%-7s", $logLevels[$content['level']])." ".sprintf("%-15s", $content['ip'])." ".($this->ident>0?str_pad('',$this->ident,' '):'').$content['message'];
 			fwrite($filefd, $message."\n");
 			fclose($filefd);
 			@chmod($logfile, octdec(empty($conf->global->MAIN_UMASK)?'0664':$conf->global->MAIN_UMASK));