diff --git a/ext/js/pages/settings/languages-controller.js b/ext/js/pages/settings/languages-controller.js
index befda65a15..7556350977 100755
--- a/ext/js/pages/settings/languages-controller.js
+++ b/ext/js/pages/settings/languages-controller.js
@@ -56,16 +56,16 @@ export class LanguagesController {
     async _updateOptions() {
         const options = await this._settingsController.getOptions();
         const {general: {language}} = options;
+
         if (!options.languages[language]) {
+            /** @type {import('settings').LanguageOptions} */
+            const defaultOptions = {
+                textPreprocessors: {}
+            };
             await this._settingsController.modifyProfileSettings([{
                 action: 'set',
-                path: 'languages',
-                value: {
-                    ...options.languages,
-                    [language]: {
-                        textPreprocessors: {}
-                    }
-                }
+                path: `languages[${JSON.stringify(language)}]`,
+                value: defaultOptions
             }]);
         }
     }
diff --git a/types/ext/settings.d.ts b/types/ext/settings.d.ts
index 623f66b1d7..1a740ed2ab 100644
--- a/types/ext/settings.d.ts
+++ b/types/ext/settings.d.ts
@@ -348,7 +348,7 @@ export type TextPreprocessorsOptions = {
 };
 
 export type LanguageOptions = {
-    textPreprocessors?: TextPreprocessorsOptions;
+    textPreprocessors: TextPreprocessorsOptions;
 };
 
 export type LanguageOptionsObjectMap = {