diff --git a/src/Services/InfoProviderSystem/DTOtoEntityConverter.php b/src/Services/InfoProviderSystem/DTOtoEntityConverter.php
index d09f1d05..a655a0df 100644
--- a/src/Services/InfoProviderSystem/DTOtoEntityConverter.php
+++ b/src/Services/InfoProviderSystem/DTOtoEntityConverter.php
@@ -221,7 +221,7 @@ final class DTOtoEntityConverter
             $attachment = $this->convertFile($image, $image_type);
 
             $attachments_grouped[$attachment->getName()][] = $attachment;
-            if (count($attachments_grouped[$attachment->getName()] ?? []) > 1) {
+            if (count($attachments_grouped[$attachment->getName()]) > 1) {
                 $attachment->setName($attachment->getName() . ' (' . (count($attachments_grouped[$attachment->getName()]) + 1) . ')');
             }
 
@@ -236,7 +236,7 @@ final class DTOtoEntityConverter
             $attachment = $this->convertFile($datasheet, $datasheet_type);
 
             $attachments_grouped[$attachment->getName()][] = $attachment;
-            if (count($attachments_grouped[$attachment->getName()] ?? []) > 1) {
+            if (count($attachments_grouped[$attachment->getName()]) > 1) {
                 $attachment->setName($attachment->getName() . ' (' . (count($attachments_grouped[$attachment->getName()])) . ')');
             }
 
@@ -357,4 +357,4 @@ final class DTOtoEntityConverter
         return $tmp;
     }
 
-}
\ No newline at end of file
+}
diff --git a/src/Twig/FormatExtension.php b/src/Twig/FormatExtension.php
index 76628ccd..46313aaf 100644
--- a/src/Twig/FormatExtension.php
+++ b/src/Twig/FormatExtension.php
@@ -82,7 +82,7 @@ final class FormatExtension extends AbstractExtension
     public function formatBytes(int $bytes, int $precision = 2): string
     {
         $size = ['B','kB','MB','GB','TB','PB','EB','ZB','YB'];
-        $factor = floor((strlen((string) $bytes) - 1) / 3);
+        $factor = (int) floor((strlen((string) $bytes) - 1) / 3);
         //We use the real (10 based) SI prefix here
         return sprintf("%.{$precision}f", $bytes / (1000 ** $factor)) . ' ' . @$size[$factor];
     }