diff --git a/samples/combo/combo.cpp b/samples/combo/combo.cpp
index fded5d1a18..62c34e53a5 100644
--- a/samples/combo/combo.cpp
+++ b/samples/combo/combo.cpp
@@ -273,7 +273,7 @@ public:
 // wxListView Custom popup interface
 // ----------------------------------------------------------------------------
 
-#include <wx/listctrl.h>
+#include "wx/listctrl.h"
 
 class ListViewComboPopup : public wxListView, public wxComboPopup
 {
@@ -367,7 +367,7 @@ wxEND_EVENT_TABLE()
 // wxTreeCtrl Custom popup interface
 // ----------------------------------------------------------------------------
 
-#include <wx/treectrl.h>
+#include "wx/treectrl.h"
 
 class TreeCtrlComboPopup : public wxTreeCtrl, public wxComboPopup
 {