diff --git a/src/app/service/content/gm_api/gm_api.ts b/src/app/service/content/gm_api/gm_api.ts
index d9d783778..aa109b38e 100644
--- a/src/app/service/content/gm_api/gm_api.ts
+++ b/src/app/service/content/gm_api/gm_api.ts
@@ -703,7 +703,7 @@ export default class GMApi extends GM_Base {
       parentNodeId = id;
     } else {
       parentNodeId = null;
-      attrs = tagName as Record<string, string | number | boolean>;
+      attrs = (tagName || {}) as Record<string, string | number | boolean>;
       tagName = parentNode as string;
     }
     if (typeof tagName !== "string") throw new Error("The parameter 'tagName' of GM_addElement shall be a string.");