diff --git a/src/Validators/EnumValidator.php b/src/Validators/EnumValidator.php
index 7f88d36f..c8d5c0bf 100644
--- a/src/Validators/EnumValidator.php
+++ b/src/Validators/EnumValidator.php
@@ -6,6 +6,7 @@
 
 class EnumValidator extends BaseValidator
 {
+    private $classname;
     public function __construct($classname)
     {
         $this->classname = $classname;
@@ -17,7 +18,7 @@ public function __construct($classname)
      * It is therefore recommended to call the "run" method first before this.
      *
      * @param mixed $value The value to coerce.
-     * @return int The coerced value
+     * @return mixed The coerced value
      */
     public function coerce($value)
     {
diff --git a/src/Validators/InstanceValidator.php b/src/Validators/InstanceValidator.php
index 9a170f11..5978afed 100644
--- a/src/Validators/InstanceValidator.php
+++ b/src/Validators/InstanceValidator.php
@@ -4,6 +4,7 @@
 
 class InstanceValidator extends BaseValidator
 {
+    private $classname;
     public function __construct($classname)
     {
         $this->classname = $classname;
diff --git a/src/Validators/RpdeEnumValidator.php b/src/Validators/RpdeEnumValidator.php
index d189830a..7e730e59 100644
--- a/src/Validators/RpdeEnumValidator.php
+++ b/src/Validators/RpdeEnumValidator.php
@@ -4,6 +4,7 @@
 
 class RpdeEnumValidator extends BaseValidator
 {
+    private $classname;
     public function __construct($classname)
     {
         $this->classname = $classname;