diff --git a/plugins/avatars/index.php b/plugins/avatars/index.php
index 4d1f67562..06fb2e30e 100644
--- a/plugins/avatars/index.php
+++ b/plugins/avatars/index.php
@@ -10,8 +10,8 @@ class AvatarsPlugin extends \RainLoop\Plugins\AbstractPlugin
 		NAME     = 'Avatars',
 		AUTHOR   = 'SnappyMail',
 		URL      = 'https://snappymail.eu/',
-		VERSION  = '1.12',
-		RELEASE  = '2023-11-27',
+		VERSION  = '1.13',
+		RELEASE  = '2024-01-16',
 		REQUIRED = '2.25.0',
 		CATEGORY = 'Contacts',
 		LICENSE  = 'MIT',
@@ -316,7 +316,7 @@ class AvatarsPlugin extends \RainLoop\Plugins\AbstractPlugin
 		if ($aFiles) {
 			\MailSo\Base\Http::setLastModified(\filemtime($aFiles[0]));
 			return [
-				\mime_content_type($aFiles[0]),
+				\SnappyMail\File\MimeType::fromFile($aFiles[0]),
 				\file_get_contents($aFiles[0])
 			];
 		}
diff --git a/snappymail/v/0.0.0/app/libraries/snappymail/file/mimetype.php b/snappymail/v/0.0.0/app/libraries/snappymail/file/mimetype.php
index 8d41bf681..e64b57293 100644
--- a/snappymail/v/0.0.0/app/libraries/snappymail/file/mimetype.php
+++ b/snappymail/v/0.0.0/app/libraries/snappymail/file/mimetype.php
@@ -35,6 +35,9 @@ abstract class MimeType
 			if (self::$finfo) {
 				$mime = \preg_replace('#[,;].*#', '', self::$finfo->file($filename));
 			}
+			if (!$mime && \is_callable('mime_content_type')) {
+				$mime = \mime_content_type($filename);
+			}
 			if (!$mime && $fp = \fopen($filename, 'rb')) {
 				$mime = self::fromStream($fp);
 				\fclose($fp);