diff --git a/Calorimeter/CaloUtils/CaloUtils/ICaloCellMakerTool.h b/Calorimeter/CaloUtils/CaloUtils/ICaloCellMakerTool.h
deleted file mode 100644
index 8c031e32a096338b425f4afaffa2cee732efd465..0000000000000000000000000000000000000000
--- a/Calorimeter/CaloUtils/CaloUtils/ICaloCellMakerTool.h
+++ /dev/null
@@ -1,11 +0,0 @@
-/*
-  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
-*/
-
-#ifndef CALOUTILS_ICALOCELLMAKERTOOL_H
-#define CALOUTILS_ICALOCELLMAKERTOOL_H
-
-#warning "obsolete header file:  Use CaloInterface/ICaloCellMakerTool.h  instead of CaloUtils/ICaloCellMakerTool.h "
-#include "CaloInterface/ICaloCellMakerTool.h"
-
-#endif