diff --git a/EventFilter/CastorRawToDigi/plugins/CastorRawToDigi.h b/EventFilter/CastorRawToDigi/plugins/CastorRawToDigi.h
index 078a0ecfa6f53..af95030383c2d 100644
--- a/EventFilter/CastorRawToDigi/plugins/CastorRawToDigi.h
+++ b/EventFilter/CastorRawToDigi/plugins/CastorRawToDigi.h
@@ -55,7 +55,7 @@ class CastorRawToDigi : public edm::stream::EDProducer<>
   bool silent_;
   bool usenominalOrbitMessageTime_;
   int expectedOrbitMessageTime_;
-  std::auto_ptr<HcalElectronicsMap> myEMap;
+  std::unique_ptr<HcalElectronicsMap> myEMap;
   edm::EDGetTokenT<FEDRawDataCollection> tok_input_;
   edm::ParameterSet zdcemap;
 };