diff --git a/packages/cosmic-swingset/lib/ag-solo/vats/bootstrap.js b/packages/cosmic-swingset/lib/ag-solo/vats/bootstrap.js
index abf805e5430..c4ad22be932 100644
--- a/packages/cosmic-swingset/lib/ag-solo/vats/bootstrap.js
+++ b/packages/cosmic-swingset/lib/ag-solo/vats/bootstrap.js
@@ -272,6 +272,7 @@ export function buildRootObject(vatPowers) {
 
     return allComparable(
       harden({
+        comms: vats.comms,
         uploads,
         spawner,
         wallet,