diff --git a/adminstuds.php b/adminstuds.php
index 94c56485a9de023c9bb4f685e402e96ff2677e49..26a2e2825d8086ba6d5d41df73a680dbe237d9bc 100644
--- a/adminstuds.php
+++ b/adminstuds.php
@@ -467,10 +467,10 @@ if (isset($_POST['confirm_add_column'])) {
         if ($poll->format === 'D') {
             $date = DateTime::createFromFormat(__('Date', 'Y-m-d'), $_POST['newdate'])->setTime(0, 0, 0);
             $time = $date->getTimestamp();
-            $newmoment = str_replace(',', '-', strip_tags($_POST['newmoment']));
+            $newmoment = strip_tags($_POST['newmoment']);
             $adminPollService->addDateSlot($poll_id, $time, $newmoment);
         } else {
-            $newslot = str_replace(',', '-', strip_tags($_POST['choice']));
+            $newslot = strip_tags($_POST['choice']);
             $adminPollService->addClassicSlot($poll_id, $newslot);
         }
 
diff --git a/app/classes/Framadate/Services/AdminPollService.php b/app/classes/Framadate/Services/AdminPollService.php
index 51760f9c288e072cd72ed78beeb99c939d5c4d10..62912c8ccd3611bededd1a519c31da5865d0ee32 100644
--- a/app/classes/Framadate/Services/AdminPollService.php
+++ b/app/classes/Framadate/Services/AdminPollService.php
@@ -200,7 +200,7 @@ class AdminPollService {
      * @throws \Doctrine\DBAL\ConnectionException
      */
     public function addDateSlot($poll_id, $datetime, $new_moment) {
-        $this->logService->log('ADD_COLUMN', 'id:' . $poll_id . ', datetime:' . $datetime . ', moment:' . $new_moment);
+        $this->logService->log('ADD_COLUMN', 'id:' . $poll_id . ', datetime:' . $datetime . ', moment:' . str_replace(',', '-', $new_moment));
 
         try {
             $slots = $this->slotRepository->listByPollId($poll_id);
@@ -252,7 +252,7 @@ class AdminPollService {
      * @throws \Doctrine\DBAL\DBALException
      */
     public function addClassicSlot($poll_id, $title) {
-        $this->logService->log('ADD_COLUMN', 'id:' . $poll_id . ', title:' . $title);
+        $this->logService->log('ADD_COLUMN', 'id:' . $poll_id . ', title:' . str_replace(',', '-', $title));
 
         $slots = $this->slotRepository->listByPollId($poll_id);