diff --git a/README.md b/README.md
index 0b19532..ea0bfcc 100644
--- a/README.md
+++ b/README.md
@@ -169,6 +169,7 @@ FYI: We are still working on a one-liner...
 
 ![schematic-view.jpg](images/schematic-view.jpg "schematic-view.jpg")
 
+Schematic drawing of the physical construction:
 ![physical-view.jpg](images/physical-view.jpg "physical-view.jpg")
 
 For construction on micro SD, see Elm Chan's [schematics](http://elm-chan.org/works/sd8p/rc/sd8p_mo.png)