diff --git a/Control/StoreGate/StoreGate/tools/SGImplSvc.h b/Control/StoreGate/StoreGate/tools/SGImplSvc.h
index 61ed99f9a37118c83954d8018e5f652a78bb6cc4..1e144ed229b0076d641aa2ad7082a17d33a9babd 100644
--- a/Control/StoreGate/StoreGate/tools/SGImplSvc.h
+++ b/Control/StoreGate/StoreGate/tools/SGImplSvc.h
@@ -109,7 +109,7 @@ namespace PerfMon { class StorePayloadMon; }
  * @author ATLAS Collaboration
  * $Id: SGImplSvc.h 797595 2017-02-16 18:36:10Z ssnyder $
  **/
-class SGImplSvc :
+class SGImplSvc final :
   public Service, 
   public IProxyDict, 
   public IHiveStoreMgr,