diff --git a/MAC/Services/TBB/TBBServer/lib/tbbservice.py b/MAC/Services/TBB/TBBServer/lib/tbbservice.py
index 6d2ed8f58b663575586c52559a21e9075e043ce1..81b29dd52cca6f00e7df71729ec87fdf2554f366 100644
--- a/MAC/Services/TBB/TBBServer/lib/tbbservice.py
+++ b/MAC/Services/TBB/TBBServer/lib/tbbservice.py
@@ -55,7 +55,7 @@ class TBBServiceMessageHandler(MessageHandlerInterface):
 
         # set/overwrite defaults
         kwargs['use_service_methods'] = True
-        kwargs['numthreads'] = 1
+        kwargs['numthreads'] = 2
 
         # init MessageHandlerInterface with supplied kwargs
         super(TBBServiceMessageHandler, self).__init__(**kwargs)