diff --git a/typescript/base/pane.ts b/typescript/base/pane.ts
index f552808e1..0a345df69 100644
--- a/typescript/base/pane.ts
+++ b/typescript/base/pane.ts
@@ -8,5 +8,5 @@ export declare class Pane extends Widget {
     loaded(): void;
     check(): void;
     setTipVisible(b: boolean): void;
-    populate(items?: any[]): void;
+    populate(items?: any): void;
 }