diff --git a/ch07.asciidoc b/ch07.asciidoc
index 383696af..c1f21e60 100644
--- a/ch07.asciidoc
+++ b/ch07.asciidoc
@@ -142,7 +142,7 @@ Looking at this new block, the node finds the +previousblockhash+ field, which c
 
 [[chain_of_blocks]]
 .Blocks linked in a chain, by reference to the previous block header hash
-image::images/msbt_0701.png[scale="70"]
+image::images/msbt_0701.png[scale="50"]
 
 [[merkle_trees]]
 === Merkle Trees