diff --git a/Export/Aggregator/AgeAggregator.php b/Export/Aggregator/AgeAggregator.php
index 778a841ca..8d0065328 100644
--- a/Export/Aggregator/AgeAggregator.php
+++ b/Export/Aggregator/AgeAggregator.php
@@ -22,6 +22,9 @@ namespace Chill\PersonBundle\Export\Aggregator;
 use Chill\MainBundle\Export\AggregatorInterface;
 use Doctrine\ORM\QueryBuilder;
 use Symfony\Component\Form\Extension\Core\Type\DateType;
+use Chill\MainBundle\Export\ExportElementValidatedInterface;
+use Symfony\Component\Validator\Context\ExecutionContextInterface;
+use Symfony\Component\Translation\TranslatorInterface;
 
 /**
  * 
@@ -30,6 +33,17 @@ use Symfony\Component\Form\Extension\Core\Type\DateType;
  */
 class AgeAggregator implements AggregatorInterface
 {
+    /**
+     *
+     * @var 
+     */
+    protected $translator;
+    
+    public function __construct($translator)
+    {
+        $this->translator = $translator;
+    }
+
     
     public function addRole()
     {
@@ -67,7 +81,7 @@ class AgeAggregator implements AggregatorInterface
             }
             
             if ($value === NULL) {
-                return "no data";
+                return $this->translator->trans("without data");
             }
             
             return $value;
diff --git a/Export/Aggregator/CountryOfBirthAggregator.php b/Export/Aggregator/CountryOfBirthAggregator.php
index 43f62c336..32c6edf95 100644
--- a/Export/Aggregator/CountryOfBirthAggregator.php
+++ b/Export/Aggregator/CountryOfBirthAggregator.php
@@ -160,7 +160,7 @@ class CountryOfBirthAggregator implements AggregatorInterface
             
             // initialize array and add blank key for null values
             $labels[''] = $this->translator->trans('without data');
-            $labels['_header'] = $this->translator->trans('Nationality');
+            $labels['_header'] = $this->translator->trans('Country of birth');
             foreach($countries as $row) {
                 $labels[$row['c_countryCode']] = $this->translatableStringHelper->localize($row['c_name']);
             }
@@ -177,7 +177,7 @@ class CountryOfBirthAggregator implements AggregatorInterface
                 'NA' => $this->translator->trans('North America'),
                 'OC' => $this->translator->trans('Oceania'),
                 ''   => $this->translator->trans('without data'),
-                '_header' => $this->translator->trans('Continent')
+                '_header' => $this->translator->trans('Continent of birth')
              );
         }
         
diff --git a/Export/Export/CountPerson.php b/Export/Export/CountPerson.php
index dda2ce18b..0431095ec 100644
--- a/Export/Export/CountPerson.php
+++ b/Export/Export/CountPerson.php
@@ -112,7 +112,7 @@ class CountPerson implements ExportInterface
         }
         
         $labels = array_combine($values, $values);
-        $labels['_header'] = 'Number of people';
+        $labels['_header'] = $this->getTitle();
         
         return function($value) use ($labels) {
             return $labels[$value];
diff --git a/Export/Export/ListPerson.php b/Export/Export/ListPerson.php
index 39e305a2c..bec4244be 100644
--- a/Export/Export/ListPerson.php
+++ b/Export/Export/ListPerson.php
@@ -20,13 +20,14 @@ use Chill\CustomFieldsBundle\Entity\CustomField;
 use Chill\MainBundle\Templating\TranslatableStringHelper;
 use Chill\CustomFieldsBundle\Service\CustomFieldProvider;
 use Symfony\Component\Form\Extension\Core\Type\DateType;
+use Chill\MainBundle\Export\ExportElementValidatedInterface;
 
 /**
  * Render a list of peoples
  *
  * @author julien
  */
-class ListPerson implements ListInterface
+class ListPerson implements ListInterface, ExportElementValidatedInterface
 {
     /**
      *
@@ -126,6 +127,26 @@ class ListPerson implements ListInterface
         ));
     }
     
+    public function validateForm($data, ExecutionContextInterface $context)
+    {
+        dump($data);
+        // get the field starting with address_
+        $addressFields = array_filter(function($el) {
+                return substr($el, 0, 8) === 'address_';
+            }, $this->fields);
+        dump($data['address_date']);
+        // check if there is one field starting with address in data
+        if (count(array_intersect($data['fields'], $addressFields)) > 0) {
+            // if a field address is checked, the date must not be empty
+            if (empty($data['address_date'])) {
+                $context
+                    ->buildViolation("You must set this date if an address is checked")
+                    ->atPath('address_date')
+                    ->addViolation();
+            }
+        }
+    }
+    
     /**
      * Get custom fields associated with person
      * 
diff --git a/Export/Filter/GenderFilter.php b/Export/Filter/GenderFilter.php
index f321900e2..729e9c682 100644
--- a/Export/Filter/GenderFilter.php
+++ b/Export/Filter/GenderFilter.php
@@ -49,11 +49,19 @@ class GenderFilter implements FilterInterface
                 Person::FEMALE_GENDER => 'Woman',
                 Person::MALE_GENDER   => 'Man'
             ),
-            'multiple' => true,
+            'multiple' => false,
             'expanded' => false
         ));
     }
     
+    public function validateForm($data, ExecutionContextInterface $context)
+    {
+        if (count($data['accepted_genders']) === 0) {
+            $context->buildViolation("You should select an option")
+                ->addViolation();
+        }
+    }
+    
     public function alterQuery(QueryBuilder $qb, $data)
     {
         $where = $qb->getDQLPart('where');
diff --git a/Resources/config/services/exports.yml b/Resources/config/services/exports.yml
index 3d2fde74a..fc6cf645f 100644
--- a/Resources/config/services/exports.yml
+++ b/Resources/config/services/exports.yml
@@ -60,5 +60,7 @@ services:
     
     chill.person.export.aggregator_age:
         class: Chill\PersonBundle\Export\Aggregator\AgeAggregator
+        arguments:
+            - "@translator"
         tags:
             - { name: chill.export_aggregator, alias: person_age_aggregator }
diff --git a/Resources/translations/messages.fr.yml b/Resources/translations/messages.fr.yml
index c24eefb1b..34ebc0e04 100644
--- a/Resources/translations/messages.fr.yml
+++ b/Resources/translations/messages.fr.yml
@@ -23,6 +23,7 @@ gender: genre
 'Place of birth': 'Lieu de naissance'
 placeOfBirth: lieu de naissance
 'Country of birth': 'Pays de naissance'
+'Continent of birth': Continent de naissance
 countryOfBirth: 'Pays de naissance'
 'Unknown country of birth': 'Pays inconnu'
 'Marital status': 'État civil'
@@ -185,3 +186,6 @@ Group people by gender: Aggréger les personnes par genre
 
 Aggregate by age: Aggréger par âge
 Calculate age in relation to this date: Calculer l'âge par rapport à cette date
+
+Group people by country of birth: Aggréger les personnes par pays de naissance
+ 
\ No newline at end of file