diff --git a/common/source/java/ch/systemsx/cisd/common/io/HDF5DataSetBasedContent.java b/common/source/java/ch/systemsx/cisd/common/io/HDF5DataSetBasedContent.java
index 116c471dbc0c77584431fbaf420de895102200e2..72baa0344d3b1c973432080bfaebd0c085517650 100644
--- a/common/source/java/ch/systemsx/cisd/common/io/HDF5DataSetBasedContent.java
+++ b/common/source/java/ch/systemsx/cisd/common/io/HDF5DataSetBasedContent.java
@@ -16,11 +16,8 @@
 
 package ch.systemsx.cisd.common.io;
 
-import java.io.Closeable;
 import java.io.File;
 import java.io.InputStream;
-import java.util.ArrayList;
-import java.util.List;
 
 import ch.systemsx.cisd.base.io.AdapterIInputStreamToInputStream;
 import ch.systemsx.cisd.base.io.IRandomAccessFile;
@@ -34,7 +31,7 @@ import ch.systemsx.cisd.hdf5.io.HDF5DataSetRandomAccessFile;
  * 
  * @author Bernd Rinn
  */
-public class HDF5DataSetBasedContent implements IContent, Closeable
+public class HDF5DataSetBasedContent implements IContent
 {
     private final File hdf5File;
 
@@ -46,8 +43,6 @@ public class HDF5DataSetBasedContent implements IContent, Closeable
 
     private final long size;
 
-    private final List<HDF5DataSetRandomAccessFile> randomAccessFiles;
-
     public HDF5DataSetBasedContent(File hdf5File, String dataSetPath)
     {
         this.hdf5File = hdf5File;
@@ -64,7 +59,6 @@ public class HDF5DataSetBasedContent implements IContent, Closeable
             this.size = 0L;
         }
         reader.close();
-        this.randomAccessFiles = new ArrayList<HDF5DataSetRandomAccessFile>();
     }
 
     public String tryGetName()
@@ -86,7 +80,6 @@ public class HDF5DataSetBasedContent implements IContent, Closeable
     {
         final HDF5DataSetRandomAccessFile randomAccessFile =
                 HDF5DataSetRandomAccessFile.createForReading(hdf5File, dataSetPath);
-        randomAccessFiles.add(randomAccessFile);
         return randomAccessFile;
     }
 
@@ -95,12 +88,4 @@ public class HDF5DataSetBasedContent implements IContent, Closeable
         return new AdapterIInputStreamToInputStream(getReadOnlyRandomAccessFile());
     }
 
-    public void close()
-    {
-        for (HDF5DataSetRandomAccessFile raFile : randomAccessFiles)
-        {
-            raFile.close();
-        }
-    }
-
 }