diff --git a/lib/ag-solo/start.js b/lib/ag-solo/start.js
index e189cced34e..74303545afb 100644
--- a/lib/ag-solo/start.js
+++ b/lib/ag-solo/start.js
@@ -147,7 +147,7 @@ async function buildSwingset(mailboxStateFile, kernelStateFile, withSES, vatsDir
     return p;
   }
 
-  const intervalMillis = 1000;
+  const intervalMillis = 1200;
   // TODO(hibbert) protect against kernel turns that take too long
   // drop calls to moveTimeForward if it's fallen behind, to make sure we don't
   // have two copies of controller.run() executing at the same time.