diff --git a/packages/core/api/settings.js b/packages/core/api/settings.js
index f74d47723..f2cb3fbd8 100644
--- a/packages/core/api/settings.js
+++ b/packages/core/api/settings.js
@@ -44,7 +44,7 @@ class Settings {
 
   /**
    *
-   * @param {string} key
+   * @param {GroupingKey} key
    * @param {GroupOptions} groupOptions
    */
   async setGroupOptions(key, groupOptions) {
@@ -54,7 +54,7 @@ class Settings {
 
   /**
    *
-   * @param {string} key
+   * @param {GroupingKey} key
    * @returns {GroupOptions}
    */
   getGroupOptions(key) {
diff --git a/packages/core/types.js b/packages/core/types.js
index 7ebc92c37..81be534a7 100644
--- a/packages/core/types.js
+++ b/packages/core/types.js
@@ -6,3 +6,7 @@
  *  sortDirection: "desc" | "asc"
  * }} GroupOptions
  */
+
+/**
+ * @typedef {"home" | "notes" | "notebooks" | "tags" | "topics" | "trash"} GroupingKey
+ */