diff --git a/frontend_tests/zjsunit/zjquery.js b/frontend_tests/zjsunit/zjquery.js
index 0fce0c3d85..c68e763776 100644
--- a/frontend_tests/zjsunit/zjquery.js
+++ b/frontend_tests/zjsunit/zjquery.js
@@ -442,6 +442,8 @@ function make_new_elem(selector, opts) {
 
     self.selector = selector;
 
+    self.__zjquery = true;
+
     return self;
 }