diff --git a/src/Macro.php b/src/Macro.php
index 53421b4..77cc5a6 100644
--- a/src/Macro.php
+++ b/src/Macro.php
@@ -98,6 +98,9 @@ class Macro extends Method
             $enclosingClass = $this->method->getClosureScopeClass();
         }
 
+        if (!$enclosingClass) {
+            return;
+        }
         /** @var \ReflectionMethod $enclosingMethod */
         $enclosingMethod = Collection::make($enclosingClass->getMethods())
             ->first(function (\ReflectionMethod $method) {