diff --git a/src/OnboardingSPA/components/Sidebar/components/SitegenEditorPatterns/Sidebar.js b/src/OnboardingSPA/components/Sidebar/components/SitegenEditorPatterns/Sidebar.js
index 309514205..9c96c9c08 100644
--- a/src/OnboardingSPA/components/Sidebar/components/SitegenEditorPatterns/Sidebar.js
+++ b/src/OnboardingSPA/components/Sidebar/components/SitegenEditorPatterns/Sidebar.js
@@ -323,6 +323,17 @@ const SitegenEditorPatternsSidebar = () => {
 														);
 													newPreviewSettings.settings.color.palette =
 														data.color.palette;
+													let blockGrammar = '';
+													[
+														'header',
+														'content',
+														'footer',
+													].forEach( ( part ) => {
+														if ( part in data ) {
+															blockGrammar +=
+																data[ part ];
+														}
+													} );
 													return (
 														<div
 															key={ data.slug }
@@ -348,7 +359,7 @@ const SitegenEditorPatternsSidebar = () => {
 																		: 'custom__highlighted'
 																}
 																blockGrammer={
-																	data.content
+																	blockGrammar
 																}
 																viewportWidth={
 																	1300