diff --git a/rpc/src/v1/traits/ethcore.rs b/rpc/src/v1/traits/ethcore.rs
index 00820db0a..abc87bbb8 100644
--- a/rpc/src/v1/traits/ethcore.rs
+++ b/rpc/src/v1/traits/ethcore.rs
@@ -73,7 +73,7 @@ pub trait Ethcore: Sized + Send + Sync + 'static {
 	fn default_extra_data(&self, _: Params) -> Result<Value, Error>;
 
 	/// Executes the given call and returns the VM trace for it.
-	fn vm_trace_call(&self, _: Params) -> Result<Value, Error> { rpc_unimplemented!() }
+	fn vm_trace_call(&self, _: Params) -> Result<Value, Error>;
 
 	/// Should be used to convert object to io delegate.
 	fn to_delegate(self) -> IoDelegate<Self> {
diff --git a/rpc/src/v1/types/transaction.rs b/rpc/src/v1/types/transaction.rs
index e9d4e4cb9..6a9f0e590 100644
--- a/rpc/src/v1/types/transaction.rs
+++ b/rpc/src/v1/types/transaction.rs
@@ -111,7 +111,6 @@ mod tests {
 	fn test_transaction_serialize() {
 		let t = Transaction::default();
 		let serialized = serde_json::to_string(&t).unwrap();
-		// TODO: fix create.
 		assert_eq!(serialized, r#"{"hash":"0x0000000000000000000000000000000000000000000000000000000000000000","nonce":"0x00","blockHash":null,"blockNumber":null,"transactionIndex":null,"from":"0x0000000000000000000000000000000000000000","to":null,"value":"0x00","gasPrice":"0x00","gas":"0x00","input":"0x","creates":null}"#);
 	}
 }