diff --git a/frontend_tests/zjsunit/test.js b/frontend_tests/zjsunit/test.js
index 36049d18a4..65b763eb4e 100644
--- a/frontend_tests/zjsunit/test.js
+++ b/frontend_tests/zjsunit/test.js
@@ -3,6 +3,7 @@
 const namespace = require("./namespace");
 const zblueslip = require("./zblueslip");
 const $ = require("./zjquery");
+const zpage_params = require("./zpage_params");
 
 let current_file_name;
 let verbose = false;
@@ -25,6 +26,7 @@ exports.run_test = (label, f, opts) => {
     if (!sloppy_$ && $.clear_all_elements) {
         $.clear_all_elements();
     }
+    zpage_params.reset();
 
     try {
         namespace.with_overrides(f);
diff --git a/frontend_tests/zjsunit/zpage_params.js b/frontend_tests/zjsunit/zpage_params.js
index eb6dea6c34..6f05d5678b 100644
--- a/frontend_tests/zjsunit/zpage_params.js
+++ b/frontend_tests/zjsunit/zpage_params.js
@@ -1,5 +1,11 @@
 "use strict";
 
+exports.page_params = {};
+
 exports.reset = () => {
-    exports.page_params = {};
+    for (const field in exports.page_params) {
+        if (Object.prototype.hasOwnProperty.call(exports.page_params, field)) {
+            delete exports.page_params[field];
+        }
+    }
 };