diff --git a/src/AbstractForm.php b/src/AbstractForm.php
index c4a2d84..30f1235 100644
--- a/src/AbstractForm.php
+++ b/src/AbstractForm.php
@@ -85,7 +85,7 @@ public function input($input)
     /**
      * @inheritdoc
      */
-    public function error($input, $format = '%s', $layout = '%s')
+    public function error($input)
     {
         if (! $this->errorMessages) {
             $failure = $this->filter->getFailures();
@@ -122,7 +122,7 @@ public function form($attr = [])
     /**
      * Applies the filter to a subject.
      *
-     * @param array|object $subject The subject to be filtered.     * @param array $data
+     * @param array $data
      *
      * @return bool
      */
@@ -162,5 +162,6 @@ public function getIterator()
     public function __clone()
     {
         $this->filter = clone $this->filter;
+        $this->init();
     }
 }
diff --git a/src/FormInterface.php b/src/FormInterface.php
index 41e365d..8d63aca 100644
--- a/src/FormInterface.php
+++ b/src/FormInterface.php
@@ -23,10 +23,8 @@ public function input($input);
      * Return error message
      *
      * @param string $input
-     * @param string $format
-     * @param string $layout
      *
      * @return string
      */
-    public function error($input, $format = '%s', $layout = '%s');
+    public function error($input);
 }