diff --git a/blocks/library/heading/index.js b/blocks/library/heading/index.js
index dd9d3137d540a9..acb6c5d0de4f2e 100644
--- a/blocks/library/heading/index.js
+++ b/blocks/library/heading/index.js
@@ -79,7 +79,7 @@ registerBlock( 'core/heading', {
 				blocks: [ 'core/text' ],
 				transform: ( { content, align } ) => {
 					return {
-						content,
+						content: [ content ],
 						align
 					};
 				}