diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index f468723..281edd8 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -66,6 +66,11 @@ MainWindow::MainWindow()
 void MainWindow::OnAuiNotebookPageCheck(wxAuiNotebookEvent& event){
   // TODO: Ask the user before closing
   //event.Veto();
+  int selection=event.GetSelection();
+  TabInfos *t=dynamic_cast<TabInfos *>(notebook->GetPage(selection));
+  if(t->is_dirty){
+    wxLogDebug("Tab was dirty");
+  }
 }
 
 void MainWindow::AddPage(wxWindow* window, TabInfos* infos){
diff --git a/src/ochess.hpp b/src/ochess.hpp
index 4b1b867..434ca72 100644
--- a/src/ochess.hpp
+++ b/src/ochess.hpp
@@ -53,7 +53,9 @@ public:
   long linked_id;
   /// @brief Set to true if this tab is attach to another one (c.f linked_id)
   bool is_linked;
-  TabInfos(Type type_) : type(type_), id(tab_count), is_linked(false) { tab_count++; }
+  /// @brief True if current tab is dirty
+  bool is_dirty;
+  TabInfos(Type type_) : type(type_), id(tab_count), is_linked(false), is_dirty(false) { tab_count++; }
   void Link(TabInfos *tab);
   virtual void Refresh(){};
   /// @brief Call when tab is linked to another one