diff --git a/src/auto-launch.js b/src/auto-launch.js
index 89588efc9..b66fc964d 100644
--- a/src/auto-launch.js
+++ b/src/auto-launch.js
@@ -50,7 +50,7 @@ async function disable () {
 }
 
 module.exports = async function () {
-  const activate = async ({ newValue, oldValue, feedback }) => {
+  const activate = async ({ newValue, oldValue = null, feedback = null }) => {
     if (process.env.NODE_ENV === 'development') {
       logger.info('[launch on startup] unavailable during development')
 
@@ -92,7 +92,7 @@ module.exports = async function () {
 
       return true
     } catch (err) {
-      logger.error(`[launch on startup] ${err.toString()}`)
+      logger.error(`[launch on startup] ${String(err)}`)
 
       if (feedback) {
         recoverableErrorDialog(err, {
diff --git a/src/automatic-gc.js b/src/automatic-gc.js
index 177d98e9f..82ffb6429 100644
--- a/src/automatic-gc.js
+++ b/src/automatic-gc.js
@@ -35,7 +35,7 @@ function applyConfig (newFlags) {
 }
 
 module.exports = async function () {
-  const activate = ({ newValue, oldValue }) => {
+  const activate = ({ newValue, oldValue = null }) => {
     if (newValue === oldValue) return
 
     try {
@@ -47,7 +47,7 @@ module.exports = async function () {
 
       return true
     } catch (err) {
-      logger.error(`[automatic gc] ${err.toString()}`)
+      logger.error(`[automatic gc] ${String(err)}`)
 
       return false
     }
diff --git a/src/utils/setup-global-shortcut.js b/src/utils/setup-global-shortcut.js
index 19fa9ce4c..00e33badf 100644
--- a/src/utils/setup-global-shortcut.js
+++ b/src/utils/setup-global-shortcut.js
@@ -9,7 +9,7 @@ const ipcMainEvents = require('../common/ipc-main-events')
 // This function registers a global shortcut/accelerator with a certain action
 // and (de)activates it according to its 'settingsOption' value on settings.
 module.exports = function ({ settingsOption, accelerator, action, confirmationDialog }) {
-  const activate = ({ newValue, oldValue, feedback }) => {
+  const activate = ({ newValue, oldValue = null, feedback = null }) => {
     if (newValue === oldValue) return
 
     if (newValue === true) {