diff --git a/lib/tumblr.js b/lib/tumblr.js
index be38bfb9..50fab584 100644
--- a/lib/tumblr.js
+++ b/lib/tumblr.js
@@ -791,12 +791,21 @@ class TumblrClient {
   /**
    * Gets posts tagged with the specified tag
    *
-   * @param  {{tag:string; [param:string]: string|number}} params - optional parameters sent with the request
+   * @param  {string} tag - The tag on the posts you'd like to retrieve
+   * @param  {Record<string,any>|TumblrClientCallback} [paramsOrCallback] - query parameters
    * @param  {TumblrClientCallback} [callback] **Deprecated** Omit the callback and use the promise form
    *
    * @return {Promise<any>|undefined} Request object, or Promise if {@link returnPromises} was used
    */
-  taggedPosts(params, callback) {
+  taggedPosts(tag, paramsOrCallback, callback) {
+    const params = { tag };
+
+    if (typeof paramsOrCallback === 'function') {
+      callback = /** @type {TumblrClientCallback} */ (paramsOrCallback);
+    } else if (typeof paramsOrCallback === 'object') {
+      Object.assign(params, paramsOrCallback);
+    }
+
     return this.getRequest('/v2/tagged', params, callback);
   }
 }