diff --git a/src/elements/workspace/detailsPane.ts b/src/elements/workspace/detailsPane.ts
index 98e824b..719b8e4 100644
--- a/src/elements/workspace/detailsPane.ts
+++ b/src/elements/workspace/detailsPane.ts
@@ -1,5 +1,5 @@
 import { config } from "../../../package.json";
-const ItemDetails = customElements.get("item-details")! as any;
+const ItemDetails = document.createElement("item-details").constructor! as any;
 
 export class DetailsPane extends ItemDetails {
   content = MozXULElement.parseXULToFragment(`
diff --git a/src/elements/workspace/related.ts b/src/elements/workspace/related.ts
index 7aacd07..c79d945 100644
--- a/src/elements/workspace/related.ts
+++ b/src/elements/workspace/related.ts
@@ -1,7 +1,8 @@
 // @ts-nocheck
 import { config } from "../../../package.json";
 
-const RelatedBox = customElements.get("related-box")! as typeof XULElementBase;
+const RelatedBox = document.createElement("related-box")
+  .constructor! as typeof XULElementBase;
 
 const _require = window.require;
 const { getCSSItemTypeIcon } = _require("components/icons");