diff --git a/include/wx/aui/auibook.h b/include/wx/aui/auibook.h
index 9d488b04a8..d42d784c5d 100644
--- a/include/wx/aui/auibook.h
+++ b/include/wx/aui/auibook.h
@@ -289,8 +289,8 @@ public:
     bool DeletePage(size_t page);
     bool RemovePage(size_t page);
 
-    size_t GetPageCount() const;
-    wxWindow* GetPage(size_t pageIdx) const;
+    virtual size_t GetPageCount() const;
+    virtual wxWindow* GetPage(size_t pageIdx) const;
     int GetPageIndex(wxWindow* pageWnd) const;
 
     bool SetPageText(size_t page, const wxString& text);
diff --git a/include/wx/bookctrl.h b/include/wx/bookctrl.h
index 163dd8efa0..50087a2526 100644
--- a/include/wx/bookctrl.h
+++ b/include/wx/bookctrl.h
@@ -95,7 +95,7 @@ public:
     virtual size_t GetPageCount() const { return m_pages.size(); }
 
     // get the panel which represents the given page
-    wxWindow *GetPage(size_t n) const { return m_pages[n]; }
+    virtual wxWindow *GetPage(size_t n) const { return m_pages[n]; }
 
     // get the current page or NULL if none
     wxWindow *GetCurrentPage() const