diff --git a/compat/src/index.d.ts b/compat/src/index.d.ts
index 02762292bf..8c1cb8d669 100644
--- a/compat/src/index.d.ts
+++ b/compat/src/index.d.ts
@@ -74,7 +74,7 @@ declare namespace React {
 
 	export function createPortal(
 		vnode: preact.VNode,
-		container: Element
+		container: Element | DocumentFragment
 	): preact.VNode<any>;
 
 	export function render(