diff --git a/browser/components/urlbar/UrlbarResult.sys.mjs b/browser/components/urlbar/UrlbarResult.sys.mjs
index 99f331b2c6e4f8eda1bda02cbc6bc6d3f9f4a572..d504632a3f689aefb7d22b863649cb1a8bb3c6a4 100644
--- a/browser/components/urlbar/UrlbarResult.sys.mjs
+++ b/browser/components/urlbar/UrlbarResult.sys.mjs
@@ -179,6 +179,10 @@ export class UrlbarResult {
     return this.#heuristic;
   }
 
+  set heuristic(value) {
+    this.#heuristic = value;
+  }
+
   get hideRowLabel() {
     return this.#hideRowLabel;
   }