diff --git a/VERSIONS_HOTLINE/173813 b/VERSIONS_HOTLINE/173813
new file mode 100644
index 0000000000000000000000000000000000000000..6ef78d983c51030a2901d928e659afa1e447fb7d
--- /dev/null
+++ b/VERSIONS_HOTLINE/173813
@@ -0,0 +1 @@
+ - correctif #173813 : Abonne : Le contenu du mail de confirmation peut afficher les horaires de l'activité.
\ No newline at end of file
diff --git a/library/Class/Activity/RegistrationMail.php b/library/Class/Activity/RegistrationMail.php
index 9d35bdcfd2cf8f21c75bd24fe75440244052cb14..c64837cb67786f20e21aefdec2c80f07cdb3552e 100644
--- a/library/Class/Activity/RegistrationMail.php
+++ b/library/Class/Activity/RegistrationMail.php
@@ -109,4 +109,9 @@ class Class_Activity_RegistrationMail_SessionActivity {
   public function getContentOrActivityDescription() {
     return $this->_training_session->getContentOrActivityDescription();
   }
+
+
+  public function getHoraires() : string {
+    return $this->_training_session->getHoraires();
+  }
 }
diff --git a/tests/scenarios/Activities/AbonneControllerActivitiesTest.php b/tests/scenarios/Activities/AbonneControllerActivitiesTest.php
index a262a430f766594775f35987a9a9d84102c06bd5..d37f44c7e752e692d5016b622a3e532ad04449fb 100644
--- a/tests/scenarios/Activities/AbonneControllerActivitiesTest.php
+++ b/tests/scenarios/Activities/AbonneControllerActivitiesTest.php
@@ -994,7 +994,44 @@ class AbonneControllerActivitiesAmadouInscritSessionFebruaryJavaOpenTest
 
 
 
-class AbonneControllerActivitiesAmadouWithoutMailInscritSessionFebruaryJavaOpenTest extends AbstractAbonneControllerActivitiesTestCase {
+/* hotline : https://forge.afi-sa.net/issues/173813 */
+class AbonneControllerActivitiesWithHorairesInMailRegistrationTest
+  extends AbstractAbonneControllerActivitiesTestCase {
+
+  protected $_mails;
+
+  public function setUp() {
+    parent::setUp();
+
+    Class_SessionActivity::find(31)->setHoraires('10h00');
+    $this->_session_java_fevrier
+      ->setIntervenants($this->_session_python_juillet
+                        ->getIntervenants())->save();
+
+    Class_AdminVar::set('ACTIVITY_REGISTRATION_BODY',
+                        'inscription pour : {session.horaires}');
+
+    $this->dispatch('/opac/abonne/inscrire-session/id/31');
+
+    Class_SessionActivity::clearCache();
+    Class_Article::clearCache();
+
+    $this->_mails = $this->_mail_transport->getSentMails();
+  }
+
+
+  /** @test */
+  public function firstMailBodyShouldContainsSessionHoraires() {
+    $this->assertEquals('inscription pour : 10h00', $this->_mails[0]->getBodyHtml(true));
+  }
+}
+
+
+
+
+class AbonneControllerActivitiesAmadouWithoutMailInscritSessionFebruaryJavaOpenTest
+  extends AbstractAbonneControllerActivitiesTestCase {
+
   protected
     $_mails;