diff --git a/classes/ObjectModel.php b/classes/ObjectModel.php
index 48fe026e4..fc6a40697 100644
--- a/classes/ObjectModel.php
+++ b/classes/ObjectModel.php
@@ -977,11 +977,11 @@ abstract class ObjectModelCore
 			// Checking for required fields
 			if (isset($data['required']) && $data['required'] && ($value = Tools::getValue($field, $this->{$field})) == false && (string)$value != '0')
 				if (!$this->id || $field != 'passwd')
-					$errors[] = '<b>'.self::displayFieldName($field, get_class($this), $htmlentities).'</b> '.Tools::displayError('is required.');
+					$errors[$field] = '<b>'.self::displayFieldName($field, get_class($this), $htmlentities).'</b> '.Tools::displayError('is required.');
 
 			// Checking for maximum fields sizes
 			if (isset($data['size']) && ($value = Tools::getValue($field, $this->{$field})) && Tools::strlen($value) > $data['size'])
-				$errors[] = sprintf(
+				$errors[$field] = sprintf(
 					Tools::displayError('%1$s is too long. Maximum length: %2$d'),
 					self::displayFieldName($field, get_class($this), $htmlentities),
 					$data['size']
@@ -992,7 +992,7 @@ abstract class ObjectModelCore
 			if (($value = Tools::getValue($field, $this->{$field})) || ($field == 'postcode' && $value == '0'))
 			{
 				if (isset($data['validate']) && !Validate::$data['validate']($value) && (!empty($value) || $data['required']))
-					$errors[] = '<b>'.self::displayFieldName($field, get_class($this), $htmlentities).'</b> '.Tools::displayError('is invalid.');
+					$errors[$field] = '<b>'.self::displayFieldName($field, get_class($this), $htmlentities).'</b> '.Tools::displayError('is invalid.');
 				else
 				{
 					if (isset($data['copy_post']) && !$data['copy_post'])
@@ -1136,7 +1136,7 @@ abstract class ObjectModelCore
 			$value = Tools::getValue($field);
 
 			if (empty($value))
-				$errors[] = sprintf(Tools::displayError('The field %s is required.'), self::displayFieldName($field, get_class($this), $htmlentities));
+				$errors[$field] = sprintf(Tools::displayError('The field %s is required.'), self::displayFieldName($field, get_class($this), $htmlentities));
 		}
 
 		return $errors;
diff --git a/controllers/front/AuthController.php b/controllers/front/AuthController.php
index 7d599ed65..08c96d058 100644
--- a/controllers/front/AuthController.php
+++ b/controllers/front/AuthController.php
@@ -414,11 +414,11 @@ class AuthControllerCore extends FrontController
 
 		if ($error_phone)
 			$this->errors[] = Tools::displayError('You must register at least one phone number.');
-		
+
 		$this->errors = array_unique(array_merge($this->errors, $customer->validateController()));
 
 		// Check the requires fields which are settings in the BO
-		$this->errors = array_merge($this->errors, $customer->validateFieldsRequiredDatabase());
+		$this->errors = $this->errors + $customer->validateFieldsRequiredDatabase();
 
 		if (!Configuration::get('PS_REGISTRATION_PROCESS_TYPE') && !$this->ajax && !Tools::isSubmit('submitGuestAccount'))
 		{