diff --git a/ext/bg/background.html b/ext/bg/background.html
index de3cbf20..27d9bc41 100644
--- a/ext/bg/background.html
+++ b/ext/bg/background.html
@@ -21,6 +21,6 @@
         <script src="/bg/js/database.js"></script>
         <script src="/bg/js/deinflector.js"></script>
         <script src="/bg/js/translator.js"></script>
-        <script src="/bg/js/yomichan.js"></script>
+        <script src="/bg/js/backend.js"></script>
     </body>
 </html>
diff --git a/ext/bg/js/yomichan.js b/ext/bg/js/backend.js
similarity index 99%
rename from ext/bg/js/yomichan.js
rename to ext/bg/js/backend.js
index 214bdef3..f5415d93 100644
--- a/ext/bg/js/yomichan.js
+++ b/ext/bg/js/backend.js
@@ -17,7 +17,7 @@
  */
 
 
-window.yomichan = new class {
+window.yomichanBackend = new class {
     constructor() {
         handlebarsRegister();
 
diff --git a/ext/bg/js/instance.js b/ext/bg/js/instance.js
index 0df267cc..bf858fbf 100644
--- a/ext/bg/js/instance.js
+++ b/ext/bg/js/instance.js
@@ -18,7 +18,7 @@
 
 
 function instYomi() {
-    return chrome.extension.getBackgroundPage().yomichan;
+    return chrome.extension.getBackgroundPage().yomichanBackend;
 }
 
 function instDb() {
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index 5a51af6d..e32a630d 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -17,7 +17,7 @@
  */
 
 
-window.frontend = new class {
+window.yomichanFrontend = new class {
     constructor() {
         this.popup = new Popup();
         this.popupTimer = null;