diff --git a/ext/src/lib/options.ts b/ext/src/lib/options.ts
index 8ca88e4..fe2371d 100644
--- a/ext/src/lib/options.ts
+++ b/ext/src/lib/options.ts
@@ -1,6 +1,6 @@
 "use strict";
 
-import { Options } from "../defaultOptions";
+import defaultOptions, { Options } from "../defaultOptions";
 
 
 /**
@@ -48,7 +48,32 @@ async function set<T extends keyof Options> (
 }
 
 
+/**
+ * Gets existing options from storage and compares it
+ * against defaults. Any options in defaults and not in
+ * storage are set. Does not override any existing options.
+ */
+async function update (defaults = defaultOptions): Promise<void> {
+    const oldOpts = await getAll();
+    const newOpts: Partial<Options> = {};
+
+    // Find options not already in storage
+    for (const [ optName, optVal ] of Object.entries(defaults)) {
+        if (!oldOpts.hasOwnProperty(optName)) {
+            newOpts[optName] = optVal;
+        }
+    }
+
+    // Update storage with default values of new options
+    return setAll({
+        ...oldOpts
+      , ...newOpts
+    });
+}
+
+
 export default {
     get, getAll
   , set, setAll
-}
+  , update
+};
diff --git a/ext/src/main.ts b/ext/src/main.ts
index 68c8c10..a551ba6 100755
--- a/ext/src/main.ts
+++ b/ext/src/main.ts
@@ -5,8 +5,8 @@ import semver from "semver";
 import defaultOptions, { Options } from "./defaultOptions";
 import getBridgeInfo from "./lib/getBridgeInfo";
 import messageRouter from "./lib/messageRouter";
-import options from "./lib/options";
 import nativeMessaging from "./lib/nativeMessaging";
+import options from "./lib/options";
 
 import { getChromeUserAgent } from "./lib/userAgents";
 import { getWindowCenteredProps } from "./lib/utils";
@@ -33,25 +33,9 @@ browser.runtime.onInstalled.addListener(async details => {
             await options.setAll(defaultOptions);
             break;
         }
-
         // Set newly added options
         case "update": {
-            const existingOptions = await options.getAll();
-            const newOptions: Partial<Options> = {};
-
-            // Find options not already in storage
-            for (const [ key, val ] of Object.entries(defaultOptions)) {
-                if (!existingOptions.hasOwnProperty(key)) {
-                    (newOptions as any)[key] = val;
-                }
-            }
-
-            // Update storage with default values of new options
-            options.setAll({
-                ...existingOptions
-              , ...newOptions
-            });
-
+            await options.update(defaultOptions);
             break;
         }
     }
@@ -513,7 +497,7 @@ browser.menus.onClicked.addListener(async (info, tab) => {
         userAgentWhitelist.push(matchPattern);
 
         // Update options
-        await options.set("userAgentWhitelist", userAgentWhitelist)
+        await options.set("userAgentWhitelist", userAgentWhitelist);
     }
 });
 
diff --git a/ext/src/receiverSelectorManager/selectorManagers/NativeMacReceiverSelectorManager.ts b/ext/src/receiverSelectorManager/selectorManagers/NativeMacReceiverSelectorManager.ts
index 27249fb..db2cef0 100644
--- a/ext/src/receiverSelectorManager/selectorManagers/NativeMacReceiverSelectorManager.ts
+++ b/ext/src/receiverSelectorManager/selectorManagers/NativeMacReceiverSelectorManager.ts
@@ -1,7 +1,7 @@
 "use strict";
 
-import options from "../../lib/options";
 import nativeMessaging from "../../lib/nativeMessaging";
+import options from "../../lib/options";
 
 import ReceiverSelectorManager, {
         ReceiverSelectorMediaType } from "../ReceiverSelectorManager";