diff --git a/contracts/registry/index.sol b/contracts/registry/index.sol
index 7f7ae31..fb24dd7 100644
--- a/contracts/registry/index.sol
+++ b/contracts/registry/index.sol
@@ -158,7 +158,11 @@ contract InstaIndex is CloneFactory {
         address _origin
     ) external payable returns (address _account) {
         _account = build(_owner, accountVersion, _origin);
-        if (_targets.length > 0) AccountInterface(_account).cast{value: msg.value}(_targets, _datas, _origin);
+        if (_targets.length > 0) {
+            AccountInterface(_account).cast{value: msg.value}(_targets, _datas, _origin);
+        } else {
+            require(msg.value == 0, "no-targets");
+        }
     }
 
     /**