diff --git a/script/spec-runner.js b/script/spec-runner.js
index a1b4fe185ef2..139a3d55572f 100755
--- a/script/spec-runner.js
+++ b/script/spec-runner.js
@@ -8,7 +8,7 @@ const path = require('path')
 const unknownArgs = []
 
 const args = require('minimist')(process.argv, {
-  string: ['only'],
+  string: ['runners'],
   unknown: arg => unknownArgs.push(arg)
 })
 
@@ -19,10 +19,10 @@ const NPM_CMD = process.platform === 'win32' ? 'npm.cmd' : 'npm'
 
 const specHashPath = path.resolve(__dirname, '../spec/.hash')
 
-let only = null
-if (args.only) {
-  only = args.only.split(',')
-  console.log('Only running:', only)
+let runnersToRun = null
+if (args.runners) {
+  runnersToRun = args.only.split(',')
+  console.log('Only running:', runnersToRun)
 } else {
   console.log('Will trigger all spec runners')
 }
@@ -75,7 +75,7 @@ async function runElectronTests () {
 
   const mochaFile = process.env.MOCHA_FILE
   for (const runner of runners) {
-    if (only && !only.includes(runner[1])) {
+    if (runnersToRun && !runnersToRun.includes(runner[1])) {
       console.info('\nSkipping:', runner[0])
       continue
     }
diff --git a/spec-main/api-app-spec.ts b/spec-main/api-app-spec.ts
index 180464cdea3f..7cbb24f1d8db 100644
--- a/spec-main/api-app-spec.ts
+++ b/spec-main/api-app-spec.ts
@@ -119,7 +119,7 @@ describe('app module', () => {
 
   describe('app.isPackaged', () => {
     it('should be false durings tests', () => {
-      expect(app.isPackaged).equal(false)
+      expect(app.isPackaged).to.equal(false)
     })
   })
 
@@ -180,7 +180,7 @@ describe('app module', () => {
 
       // Singleton will send us greeting data to let us know it's running.
       // After that, ask it to exit gracefully and confirm that it does.
-      appProcess.stdout.on('data', data => appProcess && appProcess.kill())
+      appProcess.stdout.on('data', data => appProcess!.kill())
       const [code, signal] = await emittedOnce(appProcess, 'close')
 
       const message = `code:\n${code}\nsignal:\n${signal}`
@@ -1226,9 +1226,9 @@ describe('app module', () => {
       expect(app.whenReady()).to.be.a('promise')
     })
 
-    it('becomes fulfilled if the app is already ready', () => {
+    it('becomes fulfilled if the app is already ready', async () => {
       expect(app.isReady()).to.equal(true)
-      expect(app.whenReady()).to.be.eventually.fulfilled.equal(undefined)
+      await expect(app.whenReady()).to.be.eventually.fulfilled.equal(undefined)
     })
   })