diff --git a/types/dat.gui/index.d.ts b/types/dat.gui/index.d.ts
index 967b5ae13b..1ce776ffcd 100644
--- a/types/dat.gui/index.d.ts
+++ b/types/dat.gui/index.d.ts
@@ -64,6 +64,7 @@ export class GUI {
     destroy(): void;
 
     addFolder(propName:string): GUI;
+    removeFolder(subFolder:GUI):void;
 
     open(): void;
     close(): void;