diff --git a/components/ILIAS/MediaObjects/SubTitles/class.ilMobMultiSrtConfirmationTable2GUI.php b/components/ILIAS/MediaObjects/SubTitles/class.ilMobMultiSrtConfirmationTable2GUI.php
index e9009d66e54a..1357c6902eac 100755
--- a/components/ILIAS/MediaObjects/SubTitles/class.ilMobMultiSrtConfirmationTable2GUI.php
+++ b/components/ILIAS/MediaObjects/SubTitles/class.ilMobMultiSrtConfirmationTable2GUI.php
@@ -65,7 +65,7 @@ protected function fillRow(array $a_set): void
             $language = $lng->txt("meta_l_" . $a_set["lang"]);
             $this->tpl->setVariable("LANGUAGE", $language);
         }
-        if ($a_set["mob"] != "") {
+        if (isset($a_set['mob']) && $a_set['mob'] !== '') {
             $this->tpl->setVariable("MEDIA_OBJECT", $a_set["mob_title"]);
         } else {
             $this->tpl->setVariable("MEDIA_OBJECT", "-");
diff --git a/components/ILIAS/MediaObjects/SubTitles/class.ilMobMultiSrtUpload.php b/components/ILIAS/MediaObjects/SubTitles/class.ilMobMultiSrtUpload.php
index b68a5c66ea1f..c5e35d5a55cc 100755
--- a/components/ILIAS/MediaObjects/SubTitles/class.ilMobMultiSrtUpload.php
+++ b/components/ILIAS/MediaObjects/SubTitles/class.ilMobMultiSrtUpload.php
@@ -145,7 +145,7 @@ public function moveMultiSrtFiles(): int
         $items = $this->getMultiSrtFiles();
         $cnt = 0;
         foreach ($items as $i) {
-            if ($i["mob"] > 0 && $i["lang"] != "") {
+            if (isset($i["mob"]) && $i["mob"] > 0 && $i["lang"] !== "") {
                 $mob = new ilObjMediaObject($i["mob"]);
                 $mob->uploadSrtFile($this->getMultiSrtUploadDir() . "/" . $i["filename"], $i["lang"], "rename");
                 $cnt++;