diff --git a/Control/AthenaCommon/python/AtlasUnixStandardJob.py b/Control/AthenaCommon/python/AtlasUnixStandardJob.py
index e894a4ed3532c70a1c67885061b696a76d75ea0c..af0b1ea4c3ce7293e2573e6491c822848b35d306 100755
--- a/Control/AthenaCommon/python/AtlasUnixStandardJob.py
+++ b/Control/AthenaCommon/python/AtlasUnixStandardJob.py
@@ -19,7 +19,7 @@ def _setupAtlasUnixStandardJob():
     svcMgr += GaudiSvcConf.EvtPersistencySvc( "EventPersistencySvc" )
     svcMgr += GaudiSvcConf.HistogramSvc( "HistogramDataSvc" )
     svcMgr += GaudiSvcConf.NTupleSvc()
-    svcMgr += GaudiSvcConf.ToolSvc()
+    # ToolSvc is already added in AppMgr.py.
     svcMgr += GaudiSvcConf.RndmGenSvc()
     svcMgr += GaudiSvcConf.ChronoStatSvc()