diff --git a/frontend_tests/zjsunit/index.js b/frontend_tests/zjsunit/index.js
index 9535b30bcd..b7bb6d1807 100644
--- a/frontend_tests/zjsunit/index.js
+++ b/frontend_tests/zjsunit/index.js
@@ -25,7 +25,7 @@ function immediate(f) {
 // Find the files we need to run.
 const finder = require('./finder.js');
 const files = finder.find_files_to_run(); // may write to console
-if (_.isEmpty(files)) {
+if (files.length === 0) {
     throw "No tests found";
 }
 
diff --git a/static/js/settings_org.js b/static/js/settings_org.js
index 6599724ff5..8943e59f83 100644
--- a/static/js/settings_org.js
+++ b/static/js/settings_org.js
@@ -963,7 +963,7 @@ exports.build_page = function () {
         const node = $("#allowed_domains_label").parent();
         if (org_join_restrictions === 'only_selected_domain') {
             node.show();
-            if (_.isEmpty(page_params.realm_domains)) {
+            if (page_params.realm_domains.length === 0) {
                 overlays.open_modal('realm_domains_modal');
             }
         } else {