diff --git a/doc/Data_structures.md b/doc/Data_structures.md
index 87ac69e..3275171 100644
--- a/doc/Data_structures.md
+++ b/doc/Data_structures.md
@@ -28,7 +28,7 @@ It's converted to ascii using b58 encoding, and makes for a 34 byte len ascii st
 
 This 34 byte ascii is what is stored. 
 
-TODO: drawing
+![Address format](img/address.jpg)
 
 ## Signatures, pubkeys