diff --git a/devops-service/core/devops-logger.rb b/devops-service/core/devops-logger.rb
index bb2074a..b148bea 100644
--- a/devops-service/core/devops-logger.rb
+++ b/devops-service/core/devops-logger.rb
@@ -15,7 +15,7 @@ class DevopsLogger
     logger.level = level
     logger.datetime_format = format
     logger.formatter = proc do |severity, datetime, progname, msg|
-      date_format = datetime.strftime(self.datetime_format)
+      date_format = datetime.strftime(format)
       "[#{date_format}] (#{progname}): #{msg}\n"
     end
     logger.debug("Logger has been created")