diff --git a/ext/js/pages/settings/dictionary-controller.js b/ext/js/pages/settings/dictionary-controller.js
index eeb7f1c626..2abebbe2a9 100644
--- a/ext/js/pages/settings/dictionary-controller.js
+++ b/ext/js/pages/settings/dictionary-controller.js
@@ -296,6 +296,8 @@ class DictionaryEntry {
      * @returns {boolean}
      */
     _setupDetails(detailsTable) {
+        // /** @type {{[key in keyof (typeof this._dictionaryInfo & typeof this._dictionaryInfo.counts)]?: string}} */
+        /** @type {Partial<Record<keyof (typeof this._dictionaryInfo & typeof this._dictionaryInfo.counts), string>>} */
         const targets = {
             author: 'Author',
             url: 'URL',
@@ -313,11 +315,11 @@ class DictionaryEntry {
         const dictionaryInfo = {...this._dictionaryInfo, ...this._dictionaryInfo.counts};
         const fragment = document.createDocumentFragment();
         let any = false;
-        for (const [key, label] of /** @type {([keyof typeof targets, string])[]} */ (Object.entries(targets))) {
+        for (const [key, label] of /** @type {([keyof (typeof this._dictionaryInfo & typeof this._dictionaryInfo.counts), string])[]} */ (Object.entries(targets))) {
             const info = dictionaryInfo[key];
             const displayText = ((_info) => {
                 if (typeof _info === 'string') { return _info; }
-                if (typeof _info?.total === 'number') {
+                if (_info && typeof _info === 'object' && 'total' in _info) {
                     return _info.total ? `${_info.total}` : false;
                 }
                 return false;