diff --git a/contrib/src/xrc/xh_frame.cpp b/contrib/src/xrc/xh_frame.cpp
index 7d4380076f..520b265ca6 100644
--- a/contrib/src/xrc/xh_frame.cpp
+++ b/contrib/src/xrc/xh_frame.cpp
@@ -21,6 +21,7 @@
 
 #include "wx/xrc/xh_frame.h"
 #include "wx/frame.h"
+#include "wx/dialog.h" // to get wxDEFAULT_DIALOG_STYLE
 #include "wx/log.h"
 #include "wx/intl.h"
 
diff --git a/contrib/src/xrc/xh_panel.cpp b/contrib/src/xrc/xh_panel.cpp
index d71a11d752..b4b4c82810 100644
--- a/contrib/src/xrc/xh_panel.cpp
+++ b/contrib/src/xrc/xh_panel.cpp
@@ -21,6 +21,7 @@
 
 #include "wx/xrc/xh_panel.h"
 #include "wx/panel.h"
+#include "wx/frame.h"  // to get wxNO_3D
 
 IMPLEMENT_DYNAMIC_CLASS(wxPanelXmlHandler, wxXmlResourceHandler)
 
diff --git a/src/xrc/xh_frame.cpp b/src/xrc/xh_frame.cpp
index 7d4380076f..520b265ca6 100644
--- a/src/xrc/xh_frame.cpp
+++ b/src/xrc/xh_frame.cpp
@@ -21,6 +21,7 @@
 
 #include "wx/xrc/xh_frame.h"
 #include "wx/frame.h"
+#include "wx/dialog.h" // to get wxDEFAULT_DIALOG_STYLE
 #include "wx/log.h"
 #include "wx/intl.h"
 
diff --git a/src/xrc/xh_panel.cpp b/src/xrc/xh_panel.cpp
index d71a11d752..b4b4c82810 100644
--- a/src/xrc/xh_panel.cpp
+++ b/src/xrc/xh_panel.cpp
@@ -21,6 +21,7 @@
 
 #include "wx/xrc/xh_panel.h"
 #include "wx/panel.h"
+#include "wx/frame.h"  // to get wxNO_3D
 
 IMPLEMENT_DYNAMIC_CLASS(wxPanelXmlHandler, wxXmlResourceHandler)