diff --git a/src/blockchain/wallet.js b/src/blockchain/wallet.js
index 2b40fe5..edee68b 100644
--- a/src/blockchain/wallet.js
+++ b/src/blockchain/wallet.js
@@ -100,13 +100,16 @@ let pendingOrders = []
 function discoverVaults() {
   const s = useStore()
   const owner = s.account
-  _discoverVaults(owner).then((result)=>{
-    if( s.account === owner ) { // double-check the account since it could have changed during our await
-      s.vaults = result
-      if( result.length && pendingOrders.length )
-        flushOrders(result[0])
-    }
-  })
+  if( owner === null )
+    s.vaults = []
+  else
+    _discoverVaults(owner).then((result)=>{
+      if( s.account === owner ) { // double-check the account since it could have changed during our await
+        s.vaults = result
+        if( result.length && pendingOrders.length )
+          flushOrders(result[0])
+      }
+    })
 }
 
 async function _discoverVaults(owner) {