diff --git a/interfaces/idocumentationprovider.h b/interfaces/idocumentationprovider.h
index 8627ac70f9..4532dafb7b 100644
--- a/interfaces/idocumentationprovider.h
+++ b/interfaces/idocumentationprovider.h
@@ -1,65 +1,66 @@
 /*  This file is part of KDevelop
     Copyright 2009 Aleix Pol <aleixpol@kde.org>
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef KDEVPLATFORM_IDOCUMENTATIONPROVIDER_H
 #define KDEVPLATFORM_IDOCUMENTATIONPROVIDER_H
 
 #include "interfacesexport.h"
 #include "idocumentation.h"
 
 class QIcon;
 class QModelIndex;
-class QAbstractListModel;
+class QAbstractItemModel;
 namespace KDevelop
 {
 class Declaration;
 
 class KDEVPLATFORMINTERFACES_EXPORT IDocumentationProvider
 {
 public:
     virtual ~IDocumentationProvider();
     
     /** @returns an IDocument instance for the specified declaration or a null pointer if none could be found.*/
     virtual IDocumentation::Ptr documentationForDeclaration(KDevelop::Declaration* declaration) const = 0;
 
-    /** @returns an instance of an interface to create an index for all the items provided by this class. */
-    virtual QAbstractListModel* indexModel() const = 0;
+    /** @returns an instance of an interface to create an index for all the items provided by this class.
+     *  Should have all items at the same level */
+    virtual QAbstractItemModel* indexModel() const = 0;
 
     /** @returns the documentation information related to the index in the model. */
     virtual IDocumentation::Ptr documentationForIndex(const QModelIndex& idx) const = 0;
 
     /** @returns some icon associated to the provider. */
     virtual QIcon icon() const = 0;
 
     /** @returns a name to identify the provider to the user. */
     virtual QString name() const = 0;
 
     /** @returns a documentation item where we can show some home page information such a context index. */
     virtual IDocumentation::Ptr homePage() const = 0;
 
 Q_SIGNALS:
     virtual void addHistory(const KDevelop::IDocumentation::Ptr& doc) const = 0;
 };
 
 }
 
 Q_DECLARE_INTERFACE( KDevelop::IDocumentationProvider, "org.kdevelop.IDocumentationProvider")
 
 #endif