diff --git a/API.md b/API.md
index 1530763..41478f9 100644
--- a/API.md
+++ b/API.md
@@ -45,7 +45,7 @@ manipulate variables and fire functions on the fly.
* [.remove(controller)](#GUI+remove)
* [.destroy()](#GUI+destroy)
* [.addFolder(name)](#GUI+addFolder) ⇒ dat.gui.GUI
- * [.removeFolder()](#GUI+removeFolder)
+ * [.removeFolder(folder)](#GUI+removeFolder)
* [.open()](#GUI+open)
* [.close()](#GUI+close)
* [.getRoot()](#GUI+getRoot) ⇒ dat.gui.GUI
@@ -230,11 +230,15 @@ name
-### gui.removeFolder()
+### gui.removeFolder(folder)
Removes a subfolder GUI instance.
-{dat.gui.GUI} folder The folder to remove.
**Kind**: instance method of [GUI
](#GUI)
+
+| Param | Type | Description |
+| --- | --- | --- |
+| folder | dat.gui.GUI
| The folder to remove. |
+
### gui.open()
diff --git a/src/dat/gui/GUI.js b/src/dat/gui/GUI.js
index 4c00993..fbc06c9 100644
--- a/src/dat/gui/GUI.js
+++ b/src/dat/gui/GUI.js
@@ -630,7 +630,7 @@ common.extend(
/**
* Removes a subfolder GUI instance.
- * {dat.gui.GUI} folder The folder to remove.
+ * @param {dat.gui.GUI} folder The folder to remove.
* @instance
*/
removeFolder: function(folder) {