diff --git a/ext/bg/js/yomichan.js b/ext/bg/js/yomichan.js
index 6918432c..f0cbdf79 100644
--- a/ext/bg/js/yomichan.js
+++ b/ext/bg/js/yomichan.js
@@ -174,7 +174,7 @@ class Yomichan {
     notifyTabs(name, value) {
         chrome.tabs.query({}, (tabs) => {
             for (const tab of tabs) {
-                chrome.tabs.sendMessage(tab.id, {name: name, value: value}, () => null);
+                chrome.tabs.sendMessage(tab.id, {name, value}, () => null);
             }
         });
     }
diff --git a/ext/fg/js/client.js b/ext/fg/js/client.js
index 932cd10f..31cc29cc 100644
--- a/ext/fg/js/client.js
+++ b/ext/fg/js/client.js
@@ -106,7 +106,7 @@ class Client {
                 range.setLength(length);
 
                 bgRenderText(
-                    {defs: definitions, root: this.fgRoot, options: this.options, sequence: sequence},
+                    {defs: definitions, root: this.fgRoot, options: this.options, sequence},
                     'term-list.html',
                     (content) => {
                         this.definitions = definitions;
@@ -114,7 +114,7 @@ class Client {
 
                         bgCanAddNotes(definitions, ['vocabExp', 'vocabReading'], (states) => {
                             if (states !== null) {
-                                states.forEach((state, index) => this.popup.sendMessage('setActionState', {index: index, state: state, sequence: sequence}));
+                                states.forEach((state, index) => this.popup.sendMessage('setActionState', {index, state, sequence}));
                             }
                         });
                     }
@@ -160,7 +160,7 @@ class Client {
 
         bgAddNote(this.definitions[index], mode, (success) => {
             if (success) {
-                this.popup.sendMessage('setActionState', {index: index, state: state, sequence: this.sequence});
+                this.popup.sendMessage('setActionState', {index, state, sequence: this.sequence});
             } else {
                 alert('Note could not be added');
             }
@@ -171,7 +171,7 @@ class Client {
         bgFindKanji(kanji, (definitions) => {
             const sequence = ++this.sequence;
             bgRenderText(
-                {defs: definitions, root: this.fgRoot, options: this.options, sequence: sequence},
+                {defs: definitions, root: this.fgRoot, options: this.options, sequence},
                 'kanji-list.html',
                 (content) => {
                     this.definitions = definitions;
@@ -179,7 +179,7 @@ class Client {
 
                     bgCanAddNotes(definitions, ['kanji'], (states) => {
                         if (states !== null) {
-                            states.forEach((state, index) => this.popup.sendMessage('setActionState', {index: index, state: state, sequence: sequence}));
+                            states.forEach((state, index) => this.popup.sendMessage('setActionState', {index, state, sequence}));
                         }
                     });
                 }
diff --git a/ext/fg/js/popup.js b/ext/fg/js/popup.js
index 53359cf3..78106319 100644
--- a/ext/fg/js/popup.js
+++ b/ext/fg/js/popup.js
@@ -70,7 +70,7 @@ class Popup {
 
     sendMessage(action, params, callback) {
         if (this.popup !== null) {
-            this.popup.contentWindow.postMessage({action: action, params: params}, '*');
+            this.popup.contentWindow.postMessage({action, params}, '*');
         }
     }