diff --git a/src/Reflection/ReflectionClass.php b/src/Reflection/ReflectionClass.php
index <HASH>..<HASH> 100644
--- a/src/Reflection/ReflectionClass.php
+++ b/src/Reflection/ReflectionClass.php
@@ -689,7 +689,7 @@ class ReflectionClass implements Reflection
     }
 
     /**
-     * Checks whether the given object is an instance
+     * Checks whether the given class string is a subclass of this class
      *
      * @link http://php.net/manual/en/reflectionclass.isinstance.php
      *
Minor docblock correction/clarification