1 files changed, 3 insertions, 1 deletions
diff --git a/plugins/org.eclipse.net4j.util.ui/src/org/eclipse/net4j/util/ui/StructuredContentProvider.java b/plugins/org.eclipse.net4j.util.ui/src/org/eclipse/net4j/util/ui/StructuredContentProvider.java
index ec810de1b9..6c08cc25aa 100644
--- a/plugins/org.eclipse.net4j.util.ui/src/org/eclipse/net4j/util/ui/StructuredContentProvider.java
+++ b/plugins/org.eclipse.net4j.util.ui/src/org/eclipse/net4j/util/ui/StructuredContentProvider.java
@@ -19,13 +19,15 @@ import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.StructuredViewer;
 import org.eclipse.jface.viewers.TreeViewer;
 import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.jface.viewers.ViewerSorter;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.widgets.Display;
 
 /**
  * @author Eike Stepper
  */
-public abstract class StructuredContentProvider<INPUT> implements IStructuredContentProvider, IListener
+public abstract class StructuredContentProvider<INPUT> extends ViewerSorter implements IStructuredContentProvider,
+    IListener
 {
   private StructuredViewer viewer;