diff --git a/framework/core/src/Extend/Compat.php b/framework/core/src/Extend/Compat.php
index a50d89191..3f1b0b88e 100644
--- a/framework/core/src/Extend/Compat.php
+++ b/framework/core/src/Extend/Compat.php
@@ -32,7 +32,7 @@ class Compat implements ExtenderInterface
         $this->callback = $callback;
     }
 
-    public function __invoke(Container $container, Extension $extension = null)
+    public function extend(Container $container, Extension $extension = null)
     {
         $container->call($this->callback);
     }
diff --git a/framework/core/src/Extend/ExtenderInterface.php b/framework/core/src/Extend/ExtenderInterface.php
index 6f9bfc7c9..26c58fa92 100644
--- a/framework/core/src/Extend/ExtenderInterface.php
+++ b/framework/core/src/Extend/ExtenderInterface.php
@@ -16,5 +16,5 @@ use Illuminate\Contracts\Container\Container;
 
 interface ExtenderInterface
 {
-    public function __invoke(Container $container, Extension $extension = null);
+    public function extend(Container $container, Extension $extension = null);
 }
diff --git a/framework/core/src/Extend/Formatter.php b/framework/core/src/Extend/Formatter.php
index 13245db4a..243f54d81 100644
--- a/framework/core/src/Extend/Formatter.php
+++ b/framework/core/src/Extend/Formatter.php
@@ -30,7 +30,7 @@ class Formatter implements ExtenderInterface
         return $this;
     }
 
-    public function __invoke(Container $container, Extension $extension = null)
+    public function extend(Container $container, Extension $extension = null)
     {
         $events = $container->make(Dispatcher::class);
 
diff --git a/framework/core/src/Extend/Frontend.php b/framework/core/src/Extend/Frontend.php
index 45282316a..1b77d541b 100644
--- a/framework/core/src/Extend/Frontend.php
+++ b/framework/core/src/Extend/Frontend.php
@@ -51,7 +51,7 @@ class Frontend implements ExtenderInterface
         return $this;
     }
 
-    public function __invoke(Container $container, Extension $extension = null)
+    public function extend(Container $container, Extension $extension = null)
     {
         $this->registerAssets($container, $this->getModuleName($extension));
         $this->registerRoutes($container);
diff --git a/framework/core/src/Extend/LanguagePack.php b/framework/core/src/Extend/LanguagePack.php
index c8a7f0c09..e579bfaee 100644
--- a/framework/core/src/Extend/LanguagePack.php
+++ b/framework/core/src/Extend/LanguagePack.php
@@ -20,7 +20,7 @@ use RuntimeException;
 
 class LanguagePack implements ExtenderInterface
 {
-    public function __invoke(Container $container, Extension $extension = null)
+    public function extend(Container $container, Extension $extension = null)
     {
         if (is_null($extension)) {
             throw new InvalidArgumentException(
diff --git a/framework/core/src/Extend/Locales.php b/framework/core/src/Extend/Locales.php
index 8b2b83e97..02a3d52a9 100644
--- a/framework/core/src/Extend/Locales.php
+++ b/framework/core/src/Extend/Locales.php
@@ -25,7 +25,7 @@ class Locales implements ExtenderInterface
         $this->directory = $directory;
     }
 
-    public function __invoke(Container $container, Extension $extension = null)
+    public function extend(Container $container, Extension $extension = null)
     {
         /** @var LocaleManager $locales */
         $locales = $container->make(LocaleManager::class);
diff --git a/framework/core/src/Extend/Routes.php b/framework/core/src/Extend/Routes.php
index c84cde797..2d3cc71ab 100644
--- a/framework/core/src/Extend/Routes.php
+++ b/framework/core/src/Extend/Routes.php
@@ -63,7 +63,7 @@ class Routes implements ExtenderInterface
         return $this;
     }
 
-    public function __invoke(Container $container, Extension $extension = null)
+    public function extend(Container $container, Extension $extension = null)
     {
         if (empty($this->routes)) {
             return;
diff --git a/framework/core/src/Extension/Extension.php b/framework/core/src/Extension/Extension.php
index 74038eae8..89b0a90a4 100644
--- a/framework/core/src/Extension/Extension.php
+++ b/framework/core/src/Extension/Extension.php
@@ -121,7 +121,7 @@ class Extension implements Arrayable
                 $extender = new Compat($extender);
             }
 
-            $extender($app, $this);
+            $extender->extend($app, $this);
         }
     }
 
diff --git a/framework/core/src/Foundation/InstalledSite.php b/framework/core/src/Foundation/InstalledSite.php
index 3aa8ca415..2362fa11f 100644
--- a/framework/core/src/Foundation/InstalledSite.php
+++ b/framework/core/src/Foundation/InstalledSite.php
@@ -173,7 +173,7 @@ class InstalledSite implements SiteInterface
         $laravel->boot();
 
         foreach ($this->extenders as $extension) {
-            $extension($laravel);
+            $extension->extend($laravel);
         }
 
         return $laravel;