diff --git a/Form/Type/Configurator/EntityTypeConfigurator.php b/Form/Type/Configurator/EntityTypeConfigurator.php
index 9d83d3d768..8486f0dce2 100644
--- a/Form/Type/Configurator/EntityTypeConfigurator.php
+++ b/Form/Type/Configurator/EntityTypeConfigurator.php
@@ -40,7 +40,7 @@ public function __construct(FormTypeGuesserInterface $guesser)
      */
     public function configure($name, array $options, array $metadata, FormConfigInterface $parentConfig)
     {
-        if (!isset($formFieldOptions['class'])) {
+        if (!isset($options['class'])) {
             $guessedOptions = $this->guesser->guessType($parentConfig->getDataClass(), $name)->getOptions();
             $options['class'] = $guessedOptions['class'];
             $options['multiple'] = $guessedOptions['multiple'];