diff --git a/ch10.asciidoc b/ch10.asciidoc
index 1be9325f..5862f756 100644
--- a/ch10.asciidoc
+++ b/ch10.asciidoc
@@ -767,7 +767,7 @@ Each node has its own perspective of the global blockchain. As each node receive
 In the first diagram (<<fork1>>), the network has a unified perspective of the blockchain, with the star block as the tip of the main chain.
 
 [[fork1]]
-[role="smallerninety"]
+[role="smallereighty"]
 .Before the fork&#x2014;all nodes have the same perspective
 image::images/mbc2_1002.png["Before the fork - all nodes have the same perspective"]