diff --git a/src/xrc/xh_bmp.cpp b/src/xrc/xh_bmp.cpp
index 57d7985107..4e61d5074e 100644
--- a/src/xrc/xh_bmp.cpp
+++ b/src/xrc/xh_bmp.cpp
@@ -29,6 +29,8 @@ wxBitmapXmlHandler::wxBitmapXmlHandler()
 
 wxObject *wxBitmapXmlHandler::DoCreateResource()
 {
+    // NB: empty parameter name means "take directly from this node's next
+    //     instead of from subnode with given name"
     return new wxBitmap(GetBitmap(wxEmptyString));
 }
 
@@ -46,6 +48,8 @@ wxIconXmlHandler::wxIconXmlHandler()
 
 wxObject *wxIconXmlHandler::DoCreateResource()
 {
+    // NB: empty parameter name means "take directly from this node's next
+    //     instead of from subnode with given name"
     return new wxIcon(GetIcon(wxEmptyString));
 }