diff --git a/include/wx/xrc/xh_propgrid.h b/include/wx/xrc/xh_propgrid.h
index d9f0b6a615..d372f6f7fe 100644
--- a/include/wx/xrc/xh_propgrid.h
+++ b/include/wx/xrc/xh_propgrid.h
@@ -47,9 +47,9 @@ public:
     void HandlePropertyGridParams();
 
 private:
-    wxPropertyGridManager*      m_manager;
-    wxPropertyGrid*             m_pg;
-    wxPropertyGridPopulator*    m_populator;
+    wxPropertyGridManager*      m_manager = nullptr;
+    wxPropertyGrid*             m_pg = nullptr;
+    wxPropertyGridPopulator*    m_populator = nullptr;
 };
 
 #endif // wxUSE_XRC && wxUSE_PROPGRID
diff --git a/src/xrc/xh_propgrid.cpp b/src/xrc/xh_propgrid.cpp
index c190aac779..1ff962c291 100644
--- a/src/xrc/xh_propgrid.cpp
+++ b/src/xrc/xh_propgrid.cpp
@@ -26,7 +26,7 @@
 IMPLEMENT_DYNAMIC_CLASS(wxPropertyGridXmlHandler, wxXmlResourceHandler)
 
 wxPropertyGridXmlHandler::wxPropertyGridXmlHandler()
-                     :wxXmlResourceHandler(), m_manager(nullptr), m_populator(nullptr)
+                     :wxXmlResourceHandler()
 {
     XRC_ADD_STYLE(wxTAB_TRAVERSAL);
     XRC_ADD_STYLE(wxPG_AUTO_SORT);