diff --git a/include/wx/gdicmn.h b/include/wx/gdicmn.h
index 27ca11d85d..d19e021358 100644
--- a/include/wx/gdicmn.h
+++ b/include/wx/gdicmn.h
@@ -68,6 +68,8 @@ enum
     wxBITMAP_TYPE_PNG_RESOURCE,
     wxBITMAP_TYPE_JPEG,
     wxBITMAP_TYPE_JPEG_RESOURCE,
+    wxBITMAP_TYPE_PNM,
+    wxBITMAP_TYPE_PNM_RESOURCE,
     wxBITMAP_TYPE_ANY = 50
 };