diff --git a/lib/logger.js b/lib/logger.js
index <HASH>..<HASH> 100644
--- a/lib/logger.js
+++ b/lib/logger.js
@@ -15,7 +15,7 @@ module.exports = {
     options = options || {};
 
     if (winston.loggers.has(name)) {
-      throw new Error('Logger with name ' + name + ' already exists!');
+      return winston.loggers.get(name);
     }
 
     var logPath = path.join(options.logDir || '', name + '.log');
Ignore duplicated log configurations.

This will make it much easier for sitespeed to be able to run multiple browsertime sessions in a row.