diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java
index 2ebbbab2cac..b46b6b3ea17 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java
@@ -716,9 +716,9 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IS
         action.setActionDefinitionId(ICEditorActionDefinitionIds.OPEN_DEF);
         setAction("OpenDefinition", action); //$NON-NLS-1$
         
-		action = new OpenTypeHierarchyAction(this);
-		action.setActionDefinitionId(ICEditorActionDefinitionIds.OPEN_TYPE_HIERARCHY);
-		setAction("OpenTypeHierarchy", action); //$NON-NLS-1$
+//		action = new OpenTypeHierarchyAction(this);
+//		action.setActionDefinitionId(ICEditorActionDefinitionIds.OPEN_TYPE_HIERARCHY);
+//		setAction("OpenTypeHierarchy", action); //$NON-NLS-1$
 
 		fShowInCViewAction = new ShowInCViewAction(this);
 		action = fShowInCViewAction;
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/ICEditorActionDefinitionIds.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/ICEditorActionDefinitionIds.java
index e8948cbae40..4ca406215e1 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/ICEditorActionDefinitionIds.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/ICEditorActionDefinitionIds.java
@@ -111,7 +111,7 @@ public interface ICEditorActionDefinitionIds extends ITextEditorActionDefinition
 	 * Action definition ID of the navigate -> open type hierarchy action
 	 * (value <code>"org.eclipse.cdt.ui.edit.text.c.open.type.hierarchy"</code>).
 	 */
-	public static final String OPEN_TYPE_HIERARCHY= "org.eclipse.cdt.ui.edit.text.c.open.type.hierarchy"; //$NON-NLS-1$
+//	public static final String OPEN_TYPE_HIERARCHY= "org.eclipse.cdt.ui.edit.text.c.open.type.hierarchy"; //$NON-NLS-1$
 
 	/**
 	 * Action definition ID of the navigate -> open action