diff --git a/src/Alias.php b/src/Alias.php
index 4902f80..cd0e852 100644
--- a/src/Alias.php
+++ b/src/Alias.php
@@ -53,6 +53,7 @@ class Alias
         }
 
         $this->addClass($this->root);
+        $this->detectFake();
         $this->detectNamespace();
         $this->detectClassType();
         $this->detectExtendsNamespace();
@@ -167,6 +168,30 @@ class Alias
         return $this->methods;
     }
 
+    /**
+     * Detect class returned by ::fake()
+     */
+    protected function detectFake()
+    {
+        $facade = $this->facade;
+        
+        if (!method_exists($facade, 'fake')) {
+            return;
+        }
+
+        $real = $facade::getFacadeRoot();
+        
+        try {
+            $facade::fake();
+            $fake = $facade::getFacadeRoot();
+            if ($fake !== $real) {
+                $this->addClass(get_class($fake));
+            }
+        } finally {
+            $facade::swap($real);
+        }
+    }
+
     /**
      * Detect the namespace
      */