diff --git a/packages/editor/src/components/post-actions/actions.js b/packages/editor/src/components/post-actions/actions.js
index fff6d6923e442..dde2f9a63f5c3 100644
--- a/packages/editor/src/components/post-actions/actions.js
+++ b/packages/editor/src/components/post-actions/actions.js
@@ -31,6 +31,7 @@ import {
 import { store as editorStore } from '../../store';
 import { unlock } from '../../lock-unlock';
 import isTemplateRevertable from '../../store/utils/is-template-revertable';
+import isTemplatePartRevertable from '../../store/utils/is-template-part-revertable';
 import { exportPatternAsJSONAction } from './export-pattern-action';
 import { CreateTemplatePartModalContents } from '../create-template-part-modal';
 
@@ -870,22 +871,6 @@ const useDuplicatePostAction = ( postType ) => {
 	);
 };
 
-const isTemplatePartRevertable = ( item ) => {
-	if ( ! item ) {
-		return false;
-	}
-	// In patterns list page we map the templates parts to a different object
-	// than the one returned from the endpoint. This is why we need to check for
-	// two props whether is custom or has a theme file.
-	const hasThemeFile =
-		item.has_theme_file || item.templatePart?.has_theme_file;
-	const isCustom = [ item.source, item.templatePart?.source ].includes(
-		TEMPLATE_ORIGINS.custom
-	);
-
-	return hasThemeFile && isCustom;
-};
-
 const resetTemplateAction = {
 	id: 'reset-template',
 	label: __( 'Reset' ),
diff --git a/packages/editor/src/store/private-actions.js b/packages/editor/src/store/private-actions.js
index 5f4ff17534eef..16e2cf141c8b3 100644
--- a/packages/editor/src/store/private-actions.js
+++ b/packages/editor/src/store/private-actions.js
@@ -15,6 +15,8 @@ import { decodeEntities } from '@wordpress/html-entities';
  * Internal dependencies
  */
 import isTemplateRevertable from './utils/is-template-revertable';
+import isTemplatePartRevertable from './utils/is-template-part-revertable';
+import { TEMPLATE_PART_POST_TYPE } from './constants';
 export * from '../dataviews/store/private-actions';
 
 /**
@@ -241,7 +243,12 @@ export const revertTemplate =
 	async ( { registry } ) => {
 		const noticeId = 'edit-site-template-reverted';
 		registry.dispatch( noticesStore ).removeNotice( noticeId );
-		if ( ! isTemplateRevertable( template ) ) {
+
+		const isRevertable =
+			template.type === TEMPLATE_PART_POST_TYPE
+				? isTemplatePartRevertable
+				: isTemplateRevertable;
+		if ( ! isRevertable( template ) ) {
 			registry
 				.dispatch( noticesStore )
 				.createErrorNotice( __( 'This template is not revertable.' ), {
diff --git a/packages/editor/src/store/utils/is-template-part-revertable.js b/packages/editor/src/store/utils/is-template-part-revertable.js
new file mode 100644
index 0000000000000..aa4d725443b54
--- /dev/null
+++ b/packages/editor/src/store/utils/is-template-part-revertable.js
@@ -0,0 +1,28 @@
+/**
+ * Internal dependencies
+ */
+import { TEMPLATE_ORIGINS } from '../constants';
+
+/**
+ * Check if a template part is revertable to its original theme-provided template file.
+ *
+ * @param {Object} templatePart The template part entity to check.
+ * @return {boolean} Whether the template part is revertable.
+ */
+export default function isTemplatePartRevertable( templatePart ) {
+	if ( ! templatePart ) {
+		return false;
+	}
+	// In patterns list page we map the templates parts to a different object
+	// than the one returned from the endpoint. This is why we need to check for
+	// two props whether is custom or has a theme file.
+	const hasThemeFile =
+		templatePart.has_theme_file ||
+		templatePart.templatePart?.has_theme_file;
+	const isCustom = [
+		templatePart.source,
+		templatePart.templatePart?.source,
+	].includes( TEMPLATE_ORIGINS.custom );
+
+	return hasThemeFile && isCustom;
+}