diff --git a/common/source/java/ch/systemsx/cisd/common/utilities/RecursiveHardLinkMaker.java b/common/source/java/ch/systemsx/cisd/common/utilities/RecursiveHardLinkMaker.java
index 1144cbdc8fab3380cb6955d2b81907bec824c568..1dc78dd99ffb075b64da512a11fba1883a95dccf 100644
--- a/common/source/java/ch/systemsx/cisd/common/utilities/RecursiveHardLinkMaker.java
+++ b/common/source/java/ch/systemsx/cisd/common/utilities/RecursiveHardLinkMaker.java
@@ -38,8 +38,7 @@ import ch.systemsx.cisd.common.process.ProcessExecutionHelper;
  * 
  * @author Tomasz Pylak
  */
-public final class RecursiveHardLinkMaker implements IPathImmutableCopier,
-        IDirectoryImmutableCopier, IFileImmutableCopier
+public final class RecursiveHardLinkMaker implements IPathImmutableCopier
 {
     private static final String HARD_LINK_EXEC = "ln";