diff --git a/include/wx/confbase.h b/include/wx/confbase.h
index cc68563138..7e6cfeacf2 100644
--- a/include/wx/confbase.h
+++ b/include/wx/confbase.h
@@ -56,7 +56,8 @@
 enum
 {
     wxCONFIG_USE_LOCAL_FILE = 1,
-    wxCONFIG_USE_GLOBAL_FILE = 2
+    wxCONFIG_USE_GLOBAL_FILE = 2,
+    wxCONFIG_USE_RELATIVE_PATH = 4
 };
 
 // ----------------------------------------------------------------------------