diff --git a/src/Configuration.php b/src/Configuration.php
index 2b771f8..1b29528 100644
--- a/src/Configuration.php
+++ b/src/Configuration.php
@@ -76,7 +76,7 @@ public function setUseragent(string $useragent)
      *
      * @return Configuration
      */
-    public static function getInstance(): Configuration
+    public static function getInstance(): self
     {
         if (is_null(static::$instance)) {
             static::$instance = new self();
diff --git a/src/Easi.php b/src/Easi.php
index a5ffd89..87349f4 100644
--- a/src/Easi.php
+++ b/src/Easi.php
@@ -72,12 +72,13 @@ public function setToken(string $token): void
      *
      * @return Easi
      */
-    public function __get(string $name): Easi
+    public function __get(string $name): self
     {
         $endpoint = __NAMESPACE__.'\\Api\\Endpoints\\'.ucfirst($name);
 
         if (!class_exists($endpoint)) {
             $this->getConfig()->getLogger()->error('Endpoint {endpoint] not found!', ['endpoint' => $endpoint]);
+
             throw new EndpointNotFoundException();
         }
 
@@ -99,13 +100,14 @@ public function getConfig(): Configuration
     /**
      * Call endpoint method.
      *
-     * @param string $name Method name
-     * @param array $arguments
+     * @param string $name      Method name
+     * @param array  $arguments
      *
-     * @return Response
      * @throws EndpointNotFoundException
      * @throws Exceptions\ApiException
      * @throws MethodNotFoundException
+     *
+     * @return Response
      */
     public function __call(string $name, array $arguments): Response
     {
@@ -126,6 +128,7 @@ public function __call(string $name, array $arguments): Response
 
             if (!method_exists($instance, $name)) {
                 $this->getConfig()->getLogger()->error('{endpoint}::{method} not found!', ['endpoint' => $endpoint, 'method' => $name]);
+
                 throw new MethodNotFoundException();
             }