diff --git a/config-default.json b/config-default.json
index 2ace042..90f5049 100644
--- a/config-default.json
+++ b/config-default.json
@@ -11,7 +11,7 @@
 
 	"port": 3000,
 	"deamon": false,
-	"parallelQueueProcessing": 2,
+	"parallelQueueProcessing": 1,
 	"cleanupTasksAfter": 2880,
 	"test": false,
 	"testSkipOrthophotos": false,
diff --git a/config.js b/config.js
index 481599c..bd88ced 100644
--- a/config.js
+++ b/config.js
@@ -93,7 +93,7 @@ config.logger.logDirectory = fromConfigFile("logger.logDirectory", ''); // Set t
 
 config.port = parseInt(argv.port || argv.p || fromConfigFile("port", process.env.PORT || 3000));
 config.deamon = argv.deamonize || argv.d || fromConfigFile("daemon", false);
-config.parallelQueueProcessing = parseInt(argv.parallel_queue_processing || argv.q || fromConfigFile("parallelQueueProcessing", 2));
+config.parallelQueueProcessing = parseInt(argv.parallel_queue_processing || argv.q || fromConfigFile("parallelQueueProcessing", 1));
 config.cleanupTasksAfter = parseInt(argv.cleanup_tasks_after || fromConfigFile("cleanupTasksAfter", 2880));
 config.cleanupUploadsAfter = parseInt(argv.cleanup_uploads_after || fromConfigFile("cleanupUploadsAfter", 2880));
 config.test = argv.test || fromConfigFile("test", false);