diff --git a/src/adaptors/UBSvgSubsetAdaptor.cpp b/src/adaptors/UBSvgSubsetAdaptor.cpp
index 315852ed..a16af8fe 100644
--- a/src/adaptors/UBSvgSubsetAdaptor.cpp
+++ b/src/adaptors/UBSvgSubsetAdaptor.cpp
@@ -64,8 +64,6 @@
 #include "core/UBApplication.h"
 #include "core/UBTextTools.h"
 
-#include "document/UBDocumentContainer.h"
-
 #include "pdf/PDFRenderer.h"
 
 #include "core/memcheck.h"
diff --git a/src/document/UBDocumentContainer.h b/src/document/UBDocumentContainer.h
index 681fdae3..056cbc01 100644
--- a/src/document/UBDocumentContainer.h
+++ b/src/document/UBDocumentContainer.h
@@ -41,8 +41,8 @@ class UBDocumentContainer : public QObject
         int pageCount(){return mDocumentThumbs.size();}
         const QPixmap* pageAt(int index){return mDocumentThumbs[index];}
 
-        static int pageFromSceneIndex(int sceneIndex);    
-        static int sceneIndexFromPage(int sceneIndex); 
+        static int pageFromSceneIndex(int sceneIndex);
+        static int sceneIndexFromPage(int sceneIndex);
 
         void duplicatePages(QList<int>& pageIndexes);
         bool movePageToIndex(int source, int target);
@@ -51,15 +51,17 @@ class UBDocumentContainer : public QObject
         void updatePage(int index);
         void addEmptyThumbPage();
 
+        void insertThumbPage(int index);
+
+
     private:
         UBDocumentProxy* mCurrentDocument;
         QList<const QPixmap*>  mDocumentThumbs;
 
-   
+
     protected:
         void deleteThumbPage(int index);
         void updateThumbPage(int index);
-        void insertThumbPage(int index);
         void reloadThumbnails();
 
     signals:
diff --git a/src/gui/UBDocumentNavigator.cpp b/src/gui/UBDocumentNavigator.cpp
index c8d75a5b..4f489ad6 100644
--- a/src/gui/UBDocumentNavigator.cpp
+++ b/src/gui/UBDocumentNavigator.cpp
@@ -99,6 +99,11 @@ void UBDocumentNavigator::generateThumbnails(UBDocumentContainer* source)
 
     for(int i = 0; i < source->selectedDocument()->pageCount(); i++)
     {
+        //claudio This is a very bad hack and shows a architectural problem
+        // source->selectedDocument()->pageCount()  !=   source->pageCount()
+        if(i>=source->pageCount())
+            source->insertThumbPage(i);
+
         const QPixmap* pix = source->pageAt(i);
         Q_ASSERT(!pix->isNull());
         int pageIndex = UBDocumentContainer::pageFromSceneIndex(i);
diff --git a/src/gui/UBDocumentTreeWidget.cpp b/src/gui/UBDocumentTreeWidget.cpp
index dc5a7a0d..4843ae55 100644
--- a/src/gui/UBDocumentTreeWidget.cpp
+++ b/src/gui/UBDocumentTreeWidget.cpp
@@ -24,6 +24,7 @@
 #include "UBDocumentTreeWidget.h"
 
 #include "document/UBDocumentProxy.h"
+//#include "document/UBDocumentContainer.h"
 
 #include "core/UBSettings.h"
 #include "core/UBApplication.h"
diff --git a/src/gui/UBPageNavigationWidget.cpp b/src/gui/UBPageNavigationWidget.cpp
index eca3c674..4b22cc5f 100644
--- a/src/gui/UBPageNavigationWidget.cpp
+++ b/src/gui/UBPageNavigationWidget.cpp
@@ -25,9 +25,6 @@
 #include "core/UBApplication.h"
 
 #include "board/UBBoardController.h"
-
-#include "document/UBDocumentContainer.h"
-
 #include "globals/UBGlobals.h"
 
 #include "core/memcheck.h"