diff --git a/client/src/rpc_config.rs b/client/src/rpc_config.rs
index c6008d7adb..8877a789cb 100644
--- a/client/src/rpc_config.rs
+++ b/client/src/rpc_config.rs
@@ -85,7 +85,6 @@ pub struct RpcSimulateBundleConfig {
     pub transaction_encoding: Option<UiTransactionEncoding>,
 
     /// Specifies the bank to run simulation against.
-    #[serde(flatten)]
     pub simulation_bank: Option<SimulationSlotConfig>,
 
     /// Opt to skip sig-verify for faster performance.
diff --git a/rpc/src/rpc.rs b/rpc/src/rpc.rs
index ae25472b7f..1bde5de537 100644
--- a/rpc/src/rpc.rs
+++ b/rpc/src/rpc.rs
@@ -4005,14 +4005,6 @@ pub mod rpc_full {
                 SimulationSlotConfig::Tip => Ok(meta.bank_forks.read().unwrap().working_bank()),
             }?;
 
-            // TODO: Come back to this and allow unfrozen bank as long as the parent is frozen.
-            if !bank.is_frozen() {
-                return Err(Error::invalid_params(format!(
-                    "bank at slot {} is not frozen",
-                    bank.slot()
-                )));
-            }
-
             let tx_encoding = config
                 .transaction_encoding
                 .unwrap_or(UiTransactionEncoding::Base64);