diff --git a/lightbox-photoswipe.php b/lightbox-photoswipe.php
index 34d8ad5..3e3bdbc 100644
--- a/lightbox-photoswipe.php
+++ b/lightbox-photoswipe.php
@@ -3,7 +3,7 @@
 Plugin Name: Lightbox with PhotoSwipe
 Plugin URI: https://wordpress.org/plugins/lightbox-photoswipe/
 Description: Lightbox with PhotoSwipe
-Version: 5.1.5
+Version: 5.1.6
 Author: Arno Welzel
 Author URI: http://arnowelzel.de
 Text Domain: lightbox-photoswipe
diff --git a/readme.txt b/readme.txt
index d117d25..6d4e381 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,7 +4,7 @@ Contributors: awelzel
 Tags: attachments, images, gallery, lightbox, fancybox, photoswipe
 Requires at least: 5.3
 Tested up to: 6.4
-Stable tag: 5.1.5
+Stable tag: 5.1.6
 Donate link: https://paypal.me/ArnoWelzel
 License: GPLv2
 License URI: http://www.gnu.org/licenses/gpl-2.0.html
@@ -219,6 +219,11 @@ If you change any of the stylesheets or frontend scripts in `src/js` or `src/lib
 
 == Changelog ==
 
+= 5.1.6 =
+
+* Make sure, that displaying SVG images in the lightbox is supported even if WordPress does not report it as allowed
+  file type for upload (for example when not logged in as administrator).
+
 = 5.1.5 =
 
 * Fixed handling of tabindex attribute in image links with Bricks image slider: if image links contain a tabindex
diff --git a/src/LightboxPhotoSwipe/LightboxPhotoSwipe.php b/src/LightboxPhotoSwipe/LightboxPhotoSwipe.php
index ecb4913..b4f3469 100644
--- a/src/LightboxPhotoSwipe/LightboxPhotoSwipe.php
+++ b/src/LightboxPhotoSwipe/LightboxPhotoSwipe.php
@@ -11,7 +11,7 @@
  */
 class LightboxPhotoSwipe
 {
-    const VERSION = '5.1.5';
+    const VERSION = '5.1.6';
     const SLUG = 'lightbox-photoswipe';
     const META_VERSION = '14';
     const CACHE_EXPIRE_IMG_DETAILS = 86400;
@@ -316,7 +316,11 @@ public function callbackProperties(array $matches)
             $file = $this->getHomeUrl() . $file;
         }
 
-        $type = wp_check_filetype($file);
+        $mimeTypes = get_allowed_mime_types();
+        if (!in_array('svg', $mimeTypes)) {
+            $mimeTypes['svg'] = 'image/svg+xml';
+        }
+        $type = wp_check_filetype($file, $mimeTypes);
         $extension = strtolower($type['ext']);
         $captionCaption = '';
         $captionDescription = '';