diff --git a/Stellar-ledger.x b/Stellar-ledger.x
index dd58ae8..d19462a 100644
--- a/Stellar-ledger.x
+++ b/Stellar-ledger.x
@@ -400,6 +400,8 @@ struct DiagnosticEvent
     ContractEvent event;
 };
 
+typedef DiagnosticEvent DiagnosticEvents<>;
+
 struct SorobanTransactionMetaExtV1
 {
     ExtensionPoint ext;