diff --git a/ext/bg/js/api.js b/ext/bg/js/api.js
index ac53a7a3..103d247c 100644
--- a/ext/bg/js/api.js
+++ b/ext/bg/js/api.js
@@ -21,81 +21,6 @@
  * Helpers
  */
 
-function utilMessageDispatch({action, params}, sender, callback) {
-    const forward = (promise, callback) => {
-        return promise.then(result => {
-            callback({result});
-        }).catch(error => {
-            callback({error});
-        });
-    };
-
-    const handlers = {
-        optionsGet: ({callback}) => {
-            forward(optionsLoad(), callback);
-        },
-
-        kanjiFind: ({text, callback}) => {
-            forward(apiKanjiFind(text), callback);
-        },
-
-        termsFind: ({text, callback}) => {
-            forward(apiTermsFind(text), callback);
-        },
-
-        templateRender: ({template, data, callback}) => {
-            forward(apiTemplateRender(template, data), callback);
-        },
-
-        definitionAdd: ({definition, mode, callback}) => {
-            forward(apiDefinitionAdd(definition, mode), callback);
-        },
-
-        definitionsAddable: ({definitions, modes, callback}) => {
-            forward(apiDefinitionsAddable(definitions, modes), callback);
-        },
-
-        noteView: ({noteId}) => {
-            forward(apiNoteView(noteId), callback);
-        }
-    };
-
-    const handler = handlers[action];
-    if (handler) {
-        params.callback = callback;
-        handler(params);
-    }
-
-    return true;
-}
-
-function utilCommandDispatch(command) {
-    const handlers = {
-        search: () => {
-            chrome.tabs.create({url: chrome.extension.getURL('/bg/search.html')});
-        },
-
-        help: () => {
-            chrome.tabs.create({url: 'https://foosoft.net/projects/yomichan/'});
-        },
-
-        options: () => {
-            chrome.runtime.openOptionsPage();
-        },
-
-        toggle: () => {
-            const options = chrome.extension.getBackgroundPage().yomichan.options;
-            options.general.enable = !options.general.enable;
-            optionsSave(options).then(() => apiOptionsSet(options));
-        }
-    };
-
-    const handler = handlers[command];
-    if (handler) {
-        handler();
-    }
-}
-
 function utilNoteFormat(definition, mode) {
     const options = chrome.extension.getBackgroundPage().yomichan.options;
     const note = {fields: {}, tags: options.anki.tags};
@@ -142,6 +67,33 @@ function utilNoteFormat(definition, mode) {
  * API
  */
 
+async function apiCommandExec(command) {
+    const handlers = {
+        search: () => {
+            chrome.tabs.create({url: chrome.extension.getURL('/bg/search.html')});
+        },
+
+        help: () => {
+            chrome.tabs.create({url: 'https://foosoft.net/projects/yomichan/'});
+        },
+
+        options: () => {
+            chrome.runtime.openOptionsPage();
+        },
+
+        toggle: () => {
+            const options = chrome.extension.getBackgroundPage().yomichan.options;
+            options.general.enable = !options.general.enable;
+            optionsSave(options).then(() => apiOptionsSet(options));
+        }
+    };
+
+    const handler = handlers[command];
+    if (handler) {
+        handler();
+    }
+}
+
 async function apiOptionsSet(options) {
     // In Firefox, setting options from the options UI somehow carries references
     // to the DOM across to the background page, causing the options object to
diff --git a/ext/bg/js/backend.js b/ext/bg/js/backend.js
index f7823047..2f60b4b7 100644
--- a/ext/bg/js/backend.js
+++ b/ext/bg/js/backend.js
@@ -26,8 +26,54 @@ window.yomichan = new class {
         this.translator.prepare().then(optionsLoad).then(options => {
             apiOptionsSet(options);
 
-            chrome.commands.onCommand.addListener(utilCommandDispatch);
-            chrome.runtime.onMessage.addListener(utilMessageDispatch);
+            chrome.commands.onCommand.addListener(apiCommandExec);
+            chrome.runtime.onMessage.addListener(({action, params}, sender, callback) => {
+                const forward = (promise, callback) => {
+                    return promise.then(result => {
+                        callback({result});
+                    }).catch(error => {
+                        callback({error});
+                    });
+                };
+
+                const handlers = {
+                    optionsGet: ({callback}) => {
+                        forward(optionsLoad(), callback);
+                    },
+
+                    kanjiFind: ({text, callback}) => {
+                        forward(apiKanjiFind(text), callback);
+                    },
+
+                    termsFind: ({text, callback}) => {
+                        forward(apiTermsFind(text), callback);
+                    },
+
+                    templateRender: ({template, data, callback}) => {
+                        forward(apiTemplateRender(template, data), callback);
+                    },
+
+                    definitionAdd: ({definition, mode, callback}) => {
+                        forward(apiDefinitionAdd(definition, mode), callback);
+                    },
+
+                    definitionsAddable: ({definitions, modes, callback}) => {
+                        forward(apiDefinitionsAddable(definitions, modes), callback);
+                    },
+
+                    noteView: ({noteId}) => {
+                        forward(apiNoteView(noteId), callback);
+                    }
+                };
+
+                const handler = handlers[action];
+                if (handler) {
+                    params.callback = callback;
+                    handler(params);
+                }
+
+                return true;
+            });
 
             if (options.general.showGuide) {
                 chrome.tabs.create({url: chrome.extension.getURL('/bg/guide.html')});
diff --git a/ext/bg/js/popup.js b/ext/bg/js/popup.js
index 712839d9..77cb5166 100644
--- a/ext/bg/js/popup.js
+++ b/ext/bg/js/popup.js
@@ -18,14 +18,14 @@
 
 
 $(document).ready(() => {
-    $('#open-search').click(() => utilCommandDispatch('search'));
-    $('#open-options').click(() => utilCommandDispatch('options'));
-    $('#open-help').click(() => utilCommandDispatch('help'));
+    $('#open-search').click(() => apiCommandExec('search'));
+    $('#open-options').click(() => apiCommandExec('options'));
+    $('#open-help').click(() => apiCommandExec('help'));
 
     optionsLoad().then(options => {
         const toggle = $('#enable-search');
         toggle.prop('checked', options.general.enable).change();
         toggle.bootstrapToggle();
-        toggle.change(() => utilCommandDispatch('toggle'));
+        toggle.change(() => apiCommandExec('toggle'));
     });
 });