diff --git a/lib/ag-solo/vats/vat-demo.js b/lib/ag-solo/vats/vat-demo.js
index 49b37409441..8a66efe8eb1 100644
--- a/lib/ag-solo/vats/vat-demo.js
+++ b/lib/ag-solo/vats/vat-demo.js
@@ -20,6 +20,7 @@ function build(E, log) {
   let sharedGalleryUserFacet;
   let sharedHandoffService;
   let sharedDustIssuer;
+  let contractHost;
 
   let lastPublished;
   const subscribers = [];
@@ -57,6 +58,7 @@ function build(E, log) {
     const issuers = await E(gallery.userFacet).getIssuers();
     sharedDustIssuer = issuers.dustIssuer;
     sharedHandoffService = makeHandoffService();
+    contractHost = host;
   }
 
   async function createDemoClientBundle(_nickname) {
@@ -69,6 +71,7 @@ function build(E, log) {
       handoffService,
       purse,
       canvasStatePublisher,
+      contractHost,
     };
     return harden(chainBundle);
   }