diff --git a/browser/base/content/test/alerts/head.js b/browser/base/content/test/alerts/head.js
index 94a7324fa089..626a0ae33ab5 100644
--- a/browser/base/content/test/alerts/head.js
+++ b/browser/base/content/test/alerts/head.js
@@ -1,16 +1,11 @@
 async function addNotificationPermission(originString) {
-  return new Promise(resolve => {
-    SpecialPowers.pushPermissions(
-      [
-        {
-          type: "desktop-notification",
-          allow: true,
-          context: originString,
-        },
-      ],
-      resolve
-    );
-  });
+  return SpecialPowers.pushPermissions([
+    {
+      type: "desktop-notification",
+      allow: true,
+      context: originString,
+    },
+  ]);
 }
 
 /**
diff --git a/devtools/client/aboutdebugging/test/browser/resources/service-workers/push-sw.html b/devtools/client/aboutdebugging/test/browser/resources/service-workers/push-sw.html
index e03fc2268221..174d35722b78 100644
--- a/devtools/client/aboutdebugging/test/browser/resources/service-workers/push-sw.html
+++ b/devtools/client/aboutdebugging/test/browser/resources/service-workers/push-sw.html
@@ -13,10 +13,8 @@ let registration;
 let subscription;
 
 const registerServiceWorker = async function() {
-  await new Promise(resolve => {
-    const perm = { type: "desktop-notification", allow: true, context: document };
-    SpecialPowers.pushPermissions([perm], resolve);
-  });
+  const perm = { type: "desktop-notification", allow: true, context: document };
+  await SpecialPowers.pushPermissions([perm]);
 
   try {
     registration = await navigator.serviceWorker.register("push-sw.js");
diff --git a/dom/media/test/AutoplayTestUtils.js b/dom/media/test/AutoplayTestUtils.js
index 5f34f15b61b8..7006aae3749b 100644
--- a/dom/media/test/AutoplayTestUtils.js
+++ b/dom/media/test/AutoplayTestUtils.js
@@ -31,16 +31,11 @@ function log(msg) {
 const autoplayPermission = "autoplay-media";
 
 async function pushAutoplayAllowedPermission() {
-  return new Promise((resolve, reject) => {
-    SpecialPowers.pushPermissions(
-      [
-        {
-          type: autoplayPermission,
-          allow: true,
-          context: document,
-        },
-      ],
-      resolve
-    );
-  });
+  return SpecialPowers.pushPermissions([
+    {
+      type: autoplayPermission,
+      allow: true,
+      context: document,
+    },
+  ]);
 }
diff --git a/dom/plugins/test/mochitest/test_bug1165981.html b/dom/plugins/test/mochitest/test_bug1165981.html
index 04331e0ba556..7b35de55905e 100644
--- a/dom/plugins/test/mochitest/test_bug1165981.html
+++ b/dom/plugins/test/mochitest/test_bug1165981.html
@@ -43,9 +43,7 @@
       async function run() {
         ok(await SpecialPowers.setTestPluginEnabledState(SpecialPowers.Ci.nsIPluginTag.STATE_ENABLED, "Shockwave Flash"), "Should find allowed test flash plugin");
         ok(!await SpecialPowers.setTestPluginEnabledState(SpecialPowers.Ci.nsIPluginTag.STATE_ENABLED, "Third Test Plug-in"), "Should not find disallowed plugin");
-        await new Promise(resolve => {
-          SpecialPowers.pushPermissions([{type: "plugin:flash", allow: true, context: document}], resolve);
-        });
+        await SpecialPowers.pushPermissions([{type: "plugin:flash", allow: true, context: document}]);
 
         createNode("plugin-flash", "application/x-shockwave-flash-test");
         createNode("disallowedPlugin", "application/x-third-test");
diff --git a/dom/push/test/test_utils.js b/dom/push/test/test_utils.js
index cd526aab15e2..73d49cc0d642 100644
--- a/dom/push/test/test_utils.js
+++ b/dom/push/test/test_utils.js
@@ -172,12 +172,9 @@ SimpleTest.registerCleanupFunction(async function() {
 });
 
 function setPushPermission(allow) {
-  return new Promise(resolve => {
-    SpecialPowers.pushPermissions(
-      [{ type: "desktop-notification", allow, context: document }],
-      resolve
-    );
-  });
+  return SpecialPowers.pushPermissions([
+    { type: "desktop-notification", allow, context: document },
+  ]);
 }
 
 function setupPrefs() {