diff --git a/vega/vega.d.ts b/vega/vega.d.ts
index 6d86074f3..4fa32052c 100644
--- a/vega/vega.d.ts
+++ b/vega/vega.d.ts
@@ -145,7 +145,7 @@ declare namespace Vega {
   }
 
   export interface Node {
-    def: Runtime.Mark;
+    def: Vega.Mark;
     marktype: string;
     interactive: boolean;
     items: Node[];