diff --git a/include/wx/xrc/xmlres.h b/include/wx/xrc/xmlres.h
index c130d915cf..0f0b69aa92 100644
--- a/include/wx/xrc/xmlres.h
+++ b/include/wx/xrc/xmlres.h
@@ -31,6 +31,8 @@
 
 #include "wx/xml/xml.h"
 
+class WXDLLIMPEXP_FWD_BASE wxFileName;
+
 class WXDLLIMPEXP_FWD_CORE wxMenu;
 class WXDLLIMPEXP_FWD_CORE wxMenuBar;
 class WXDLLIMPEXP_FWD_CORE wxDialog;
diff --git a/src/xrc/xmlres.cpp b/src/xrc/xmlres.cpp
index fc2fa3d3ce..075489d9e7 100644
--- a/src/xrc/xmlres.cpp
+++ b/src/xrc/xmlres.cpp
@@ -180,7 +180,11 @@ bool wxXmlResource::IsArchive(const wxString& filename)
 
 bool wxXmlResource::LoadFile(const wxFileName& file)
 {
+#if wxUSE_FILESYSTEM
     return Load(wxFileSystem::FileNameToURL(file));
+#else
+    return Load(file.GetFullPath());
+#endif
 }
 
 bool wxXmlResource::LoadAllFiles(const wxString& dirname)