diff --git a/k4FWCore/include/k4FWCore/DataHandle.h b/k4FWCore/include/k4FWCore/DataHandle.h
index bc308d3b..3c6c6829 100644
--- a/k4FWCore/include/k4FWCore/DataHandle.h
+++ b/k4FWCore/include/k4FWCore/DataHandle.h
@@ -26,6 +26,8 @@
 #include "Gaudi/Algorithm.h"
 #include "GaudiKernel/DataObjectHandle.h"
 
+#include "edm4hep/Constants.h"
+
 #include "TTree.h"
 
 #include <type_traits>
@@ -213,7 +215,7 @@ template <typename T> T* DataHandle<T>::createAndPut() {
 template <typename T> const std::string DataHandle<T>::getCollMetadataCellID(const unsigned int id) {
   if (auto lpds = dynamic_cast<PodioLegacyDataSvc*>(m_eds.get())) {
     auto colMD = lpds->getProvider().getCollectionMetaData(id);
-    return colMD.getValue<std::string>("CellIDEncodingString");
+    return colMD.getValue<std::string>(edm4hep::CellIDEncoding);
   }
 
   throw GaudiException("getCollMetadataCellID is only implemented for the legacy data svc",
diff --git a/test/k4FWCoreTest/CMakeLists.txt b/test/k4FWCoreTest/CMakeLists.txt
index fd5a244b..c461c88b 100644
--- a/test/k4FWCoreTest/CMakeLists.txt
+++ b/test/k4FWCoreTest/CMakeLists.txt
@@ -21,7 +21,7 @@ limitations under the License.
 # Package: k4FWCoreTest
 ################################################################################
 
-find_package(EDM4HEP)
+find_package(EDM4HEP 0.10.01 REQUIRED)
 
 set(k4fwcoretest_plugin_sources
   src/components/TestDataHandleUniquePtr.cpp
diff --git a/test/k4FWCoreTest/src/components/k4FWCoreTest_cellID_reader.h b/test/k4FWCoreTest/src/components/k4FWCoreTest_cellID_reader.h
index c40f8b3d..8c66fdb8 100644
--- a/test/k4FWCoreTest/src/components/k4FWCoreTest_cellID_reader.h
+++ b/test/k4FWCoreTest/src/components/k4FWCoreTest_cellID_reader.h
@@ -26,6 +26,8 @@
 #include "k4FWCore/DataHandle.h"
 #include "k4FWCore/MetaDataHandle.h"
 
+#include "edm4hep/Constants.h"
+
 // datamodel
 #include "edm4hep/SimTrackerHitCollection.h"
 
@@ -53,7 +55,7 @@ class k4FWCoreTest_cellID_reader : public GaudiAlgorithm {
   /// Handle for the SimTrackerHits to be read
   DataHandle<edm4hep::SimTrackerHitCollection> m_simTrackerHitReaderHandle{"SimTrackerHits", Gaudi::DataHandle::Reader,
                                                                            this};
-  MetaDataHandle<std::string>                  m_cellIDHandle{m_simTrackerHitReaderHandle, "CellIDEncodingString",
+  MetaDataHandle<std::string>                  m_cellIDHandle{m_simTrackerHitReaderHandle, edm4hep::CellIDEncoding,
                                              Gaudi::DataHandle::Reader};
 };
 #endif /* K4FWCORE_K4FWCORETEST_CELLID */
diff --git a/test/k4FWCoreTest/src/components/k4FWCoreTest_cellID_writer.h b/test/k4FWCoreTest/src/components/k4FWCoreTest_cellID_writer.h
index ef7c7a33..3f3e975a 100644
--- a/test/k4FWCoreTest/src/components/k4FWCoreTest_cellID_writer.h
+++ b/test/k4FWCoreTest/src/components/k4FWCoreTest_cellID_writer.h
@@ -26,6 +26,8 @@
 #include "k4FWCore/DataHandle.h"
 #include "k4FWCore/MetaDataHandle.h"
 
+#include "edm4hep/Constants.h"
+
 // datamodel
 #include "edm4hep/SimTrackerHitCollection.h"
 
@@ -55,7 +57,7 @@ class k4FWCoreTest_cellID_writer : public GaudiAlgorithm {
   /// Handle for the SimTrackerHits to be written
   DataHandle<edm4hep::SimTrackerHitCollection> m_simTrackerHitWriterHandle{"SimTrackerHits", Gaudi::DataHandle::Writer,
                                                                            this};
-  MetaDataHandle<std::string>                  m_cellIDHandle{m_simTrackerHitWriterHandle, "CellIDEncodingString",
+  MetaDataHandle<std::string>                  m_cellIDHandle{m_simTrackerHitWriterHandle, edm4hep::CellIDEncoding,
                                              Gaudi::DataHandle::Writer};
 };
 #endif /* K4FWCORE_K4FWCORETEST_CELLID_WRITER */