diff --git a/Database/AthenaPOOL/OutputStreamAthenaPool/python/OutputStreamConfig.py b/Database/AthenaPOOL/OutputStreamAthenaPool/python/OutputStreamConfig.py
index f350756035d9ff83e62bd25f40fdb3376810cd8d..9601db00d8c5eb17b7b5c446b6a0e2401b79f3bf 100644
--- a/Database/AthenaPOOL/OutputStreamAthenaPool/python/OutputStreamConfig.py
+++ b/Database/AthenaPOOL/OutputStreamAthenaPool/python/OutputStreamConfig.py
@@ -36,7 +36,7 @@ def OutputStreamCfg(flags, streamName, ItemList=[], MetadataItemList=[],
       f"Stream{streamName}Tool",
       DataHeaderKey=outputStreamName,
       MetaDataPoolContainerPrefix=f"{flags.Output.StorageTechnology.MetaData}:MetaData",
-      MetaDataOutputCollection="MetaDataHdr",
+      MetaDataOutputCollection=f"{flags.Output.StorageTechnology.MetaData}:MetaDataHdr",
    )
 
    # If we're running in augmentation mode, configure the writing tool accordingly