2 files changed, 4 insertions, 10 deletions
diff --git a/src/data/things/homepage-layout.js b/src/data/things/homepage-layout.js
index 2456ca95..d00a2f4b 100644
--- a/src/data/things/homepage-layout.js
+++ b/src/data/things/homepage-layout.js
@@ -244,8 +244,6 @@ export class HomepageLayoutActionsRow extends HomepageLayoutRow {
   static [Thing.friendlyName] = `Homepage Actions Row`;
 
   static [Thing.getPropertyDescriptors] = (opts) => ({
-    ...HomepageLayoutRow[Thing.getPropertyDescriptors](opts),
-
     // Update & expose
 
     actionLinks: {
@@ -278,8 +276,6 @@ export class HomepageLayoutAlbumCarouselRow extends HomepageLayoutRow {
   static [Thing.friendlyName] = `Homepage Album Carousel Row`;
 
   static [Thing.getPropertyDescriptors] = (opts, {Album} = opts) => ({
-    ...HomepageLayoutRow[Thing.getPropertyDescriptors](opts),
-
     // Update & expose
 
     albums: referenceList({
@@ -312,8 +308,6 @@ export class HomepageLayoutAlbumGridRow extends HomepageLayoutRow {
   static [Thing.friendlyName] = `Homepage Album Grid Row`;
 
   static [Thing.getPropertyDescriptors] = (opts, {Album, Group} = opts) => ({
-    ...HomepageLayoutRow[Thing.getPropertyDescriptors](opts),
-
     // Update & expose
 
     sourceGroup: [
diff --git a/src/data/things/index.js b/src/data/things/index.js
index 41301575..676453ce 100644
--- a/src/data/things/index.js
+++ b/src/data/things/index.js
@@ -181,10 +181,10 @@ function evaluatePropertyDescriptors() {
         }
       }
 
-      constructor[CacheableObject.propertyDescriptors] = {
-        ...constructor[CacheableObject.propertyDescriptors] ?? {},
-        ...results,
-      };
+      constructor[CacheableObject.propertyDescriptors] =
+        Object.create(constructor[CacheableObject.propertyDescriptors] ?? null);
+
+      Object.assign(constructor[CacheableObject.propertyDescriptors], results);
     },
 
     showFailedClasses(failedClasses) {