diff --git a/sources/Afup/Forum/AppelConferencier.php b/sources/Afup/Forum/AppelConferencier.php
index d11511551..1caf91df7 100644
--- a/sources/Afup/Forum/AppelConferencier.php
+++ b/sources/Afup/Forum/AppelConferencier.php
@@ -490,6 +490,10 @@ public function modifierSession(
 
     public function modifierJoindinSession($id, $joindin)
     {
+        $value = 'NULL';
+        if ($joindin) {
+            $value = $this->_bdd->echapper($joindin);
+        }
         $requete = 'UPDATE afup_sessions SET ';
         $requete .= ' joindin = ' . $this->_bdd->echapper($joindin);
         $requete .= ' WHERE session_id = ' . (int) $id;
diff --git a/tests/behat/features/Admin/Events/Planning.feature b/tests/behat/features/Admin/Events/Planning.feature
index ad32c838f..ad6a6ef68 100644
--- a/tests/behat/features/Admin/Events/Planning.feature
+++ b/tests/behat/features/Admin/Events/Planning.feature
@@ -1,14 +1,14 @@
 Feature: Administration - Évènements - Planning des sessions
 
   @reloadDbWithTestData
-  Scenario Outline: Accès au planning des session(s)
+  Scenario: Accès au planning des session(s)
     Given I am logged in as admin and on the Administration
     And I follow "Planning"
     Then the ".content h2" element should contain "Planning"
     And I should see "3 SESSION(S)"
-    And I should see "<titre>"
-    And I should see "<speaker>"
-    And I should see "<id_joindin>"
+    And I should see "Jouons tous ensemble à un petit jeu Geoffrey Bachelet"
+    And I should see "Geoffrey Bachelet - AFUP(@ubermuda)"
+    And I should see "(JOIND.IN=24041)"
 
     # modifier la programmation  la session
     When I follow "Modifier la session Jouons tous ensemble à un petit jeu"
@@ -17,6 +17,7 @@ Feature: Administration - Évènements - Planning des sessions
     And I select "30" from "debut[i]"
     And I select "11" from "fin[H]"
     And I select "30" from "fin[i]"
+    When I fill in "joindin" with ""
     And I press "Soumettre"
     Then I should see "Le planning de la session a été modifiée"
     And I should see "10:30 - 11:30 / La salle T"
@@ -25,7 +26,3 @@ Feature: Administration - Évènements - Planning des sessions
     When I follow "Supprimer la session Jouons tous ensemble à un petit jeu"
     Then I should see "La programmation de la session a été supprimée"
     And I should not see "10:30 - 11:30 / La salle T"
-
-    Examples:
-      | titre | speaker | id_joindin |
-      | Jouons tous ensemble à un petit jeu Geoffrey Bachelet | Geoffrey Bachelet - AFUP(@ubermuda) | (JOIND.IN=24041) |
\ No newline at end of file