diff --git a/classname-bc-aliases.php b/classname-bc-aliases.php
deleted file mode 100644
index f69103d..0000000
--- a/classname-bc-aliases.php
+++ /dev/null
@@ -1,14 +0,0 @@
-<?php
-
-require_once 'legacy/Config_Interface.php';
-require_once 'legacy/ConfigInterfaceLegacy.php';
-
-\class_alias(
-	'\ItalyStrap\Config\ConfigFactory',
-	'\ItalyStrap\Config\Config_Factory'
-);
-
-//\class_alias(
-//	'\ItalyStrap\Config\ConfigInterface',
-//	'\ItalyStrap\Config\Config_Interface'
-//);
diff --git a/composer.json b/composer.json
index 088a1b4..66d7f47 100644
--- a/composer.json
+++ b/composer.json
@@ -47,10 +47,7 @@
     "autoload": {
         "psr-4": {
             "ItalyStrap\\": "src/"
-        },
-        "files": [
-            "classname-bc-aliases.php"
-        ]
+        }
     },
     "suggest": {
         "italystrap/event": "EventDispatcher for WordPress"
diff --git a/legacy/ConfigInterfaceLegacy.php b/legacy/ConfigInterfaceLegacy.php
deleted file mode 100644
index 32c54b1..0000000
--- a/legacy/ConfigInterfaceLegacy.php
+++ /dev/null
@@ -1,14 +0,0 @@
-<?php
-declare(strict_types=1);
-
-namespace ItalyStrap\Config;
-
-/**
- * Interface ConfigInterfaceLegacy
- * @package ItalyStrap\Config
- * This exists only for BC
- */
-interface ConfigInterfaceLegacy extends Config_Interface
-{
-
-}
diff --git a/src/Config/ConfigFactory.php b/src/Config/ConfigFactory.php
index 976e5a0..6f65ca1 100644
--- a/src/Config/ConfigFactory.php
+++ b/src/Config/ConfigFactory.php
@@ -24,7 +24,7 @@ class ConfigFactory {
 	 *
 	 * @return Config Returns the Config object
 	 */
-	public static function make( $config = [], $defaults = [] ): Config {
+	public static function make( $config = [], $defaults = [] ): ConfigInterface {
 		return new Config( $config, $defaults );
 	}
 }
diff --git a/src/Config/ConfigInterface.php b/src/Config/ConfigInterface.php
index 3bc83ae..566a4d8 100644
--- a/src/Config/ConfigInterface.php
+++ b/src/Config/ConfigInterface.php
@@ -2,16 +2,13 @@
 /**
  * Config Class that handle the classes configuration
  *
- * @version 3.0
- *
  * @package ItalyStrap\Config
  */
 declare(strict_types=1);
 
 namespace ItalyStrap\Config;
 
-interface ConfigInterface extends \ArrayAccess, \IteratorAggregate, \Countable, ConfigInterfaceLegacy {
-
+interface ConfigInterface extends Config_Interface, \ArrayAccess, \IteratorAggregate, \Countable {
 
 	/**
 	 * Retrieves all of the runtime configuration parameters
diff --git a/src/Config/Config_Factory.php b/src/Config/Config_Factory.php
new file mode 100644
index 0000000..0ae62cb
--- /dev/null
+++ b/src/Config/Config_Factory.php
@@ -0,0 +1,32 @@
+<?php
+/**
+ * Config Class that handle the classes configuration
+ *
+ * @deprecated
+ * @package ItalyStrap\Config
+ */
+
+declare(strict_types=1);
+
+namespace ItalyStrap\Config;
+
+/**
+ * ConfigFactory Class
+ * @deprecated
+ */
+class Config_Factory {
+
+	/**
+	 * Load and return the Config object.
+	 *
+	 * @param  string|array $config   File path and filename to the config array; or it is the
+	 *                                configuration array.
+	 * @param  string|array $defaults Specify a defaults array, which is then merged together
+	 *                                with the initial config array before creating the object.
+	 *
+	 * @return Config Returns the Config object
+	 */
+	public static function make( $config = [], $defaults = [] ) : ConfigInterface {
+		return ConfigFactory::make( $config, $defaults );
+	}
+}
diff --git a/legacy/Config_Interface.php b/src/Config/Config_Interface.php
similarity index 69%
rename from legacy/Config_Interface.php
rename to src/Config/Config_Interface.php
index 8ce7385..0f7c9a5 100644
--- a/legacy/Config_Interface.php
+++ b/src/Config/Config_Interface.php
@@ -3,9 +3,6 @@
 
 namespace ItalyStrap\Config;
 
-if ( \interface_exists( '\ItalyStrap\Config\Config_Interface' ) )
-	return;
-
 /**
  * Interface Config_Interface
  * @package ItalyStrap\Config