diff --git a/packages/slate-react/src/components/children.tsx b/packages/slate-react/src/components/children.tsx
index c67e85f8a..6bd279327 100644
--- a/packages/slate-react/src/components/children.tsx
+++ b/packages/slate-react/src/components/children.tsx
@@ -69,7 +69,7 @@ const Children = (props: {
         <TextComponent
           decorations={ds}
           key={key.id}
-          isLast={isLeafBlock && i === node.children.length}
+          isLast={isLeafBlock && i === node.children.length - 1}
           parent={node}
           renderLeaf={renderLeaf}
           text={n}