diff --git a/src/Models/Chain/Block.php b/src/Models/Chain/Block.php
index 5f85e01..bcbf75b 100644
--- a/src/Models/Chain/Block.php
+++ b/src/Models/Chain/Block.php
@@ -2,8 +2,8 @@
 
 namespace CoonDesign\phpGridcoin\Models\Chain;
 
-require_once __DIR__ . "/contract_mrc.php";
-require_once __DIR__ . "/transaction.php";
+require_once __DIR__ . "/ContractMRC.php";
+require_once __DIR__ . "/Transaction.php";
 require_once __DIR__ . "/../../ageSinecTimestamp.php";
 
 class Block {