diff --git a/crates/starknet_api/src/transaction.rs b/crates/starknet_api/src/transaction.rs
index 77d9b4747fc..b2af5496726 100644
--- a/crates/starknet_api/src/transaction.rs
+++ b/crates/starknet_api/src/transaction.rs
@@ -154,7 +154,8 @@ impl From<(Transaction, TransactionHash)> for executable_transaction::Transactio
             _ => {
                 unimplemented!(
                     "Unsupported transaction type. Only Invoke and L1Handler are currently \
-                     supported."
+                     supported. tx: {:?}",
+                    tx
                 )
             }
         }