diff --git a/lib/model/image_entry.dart b/lib/model/image_entry.dart
index 843574b8d..78d4d7a45 100644
--- a/lib/model/image_entry.dart
+++ b/lib/model/image_entry.dart
@@ -95,6 +95,8 @@ class ImageEntry {
 
   String get filename => basenameWithoutExtension(path);
 
+  String get mimeTypeAnySubtype => mimeType.replaceAll(RegExp('/.*'), '/*');
+
   bool get isGif => mimeType == MimeTypes.MIME_GIF;
 
   bool get isVideo => mimeType.startsWith(MimeTypes.MIME_VIDEO);
diff --git a/lib/widgets/fullscreen/fullscreen_action_delegate.dart b/lib/widgets/fullscreen/fullscreen_action_delegate.dart
index 916696a9b..fddb2bf03 100644
--- a/lib/widgets/fullscreen/fullscreen_action_delegate.dart
+++ b/lib/widgets/fullscreen/fullscreen_action_delegate.dart
@@ -35,7 +35,7 @@ class FullscreenActionDelegate {
         _showRenameDialog(context, entry);
         break;
       case FullscreenAction.open:
-        AndroidAppService.open(entry.uri, entry.mimeType);
+        AndroidAppService.open(entry.uri, entry.mimeTypeAnySubtype);
         break;
       case FullscreenAction.openMap:
         AndroidAppService.openMap(entry.geoUri);
diff --git a/lib/widgets/fullscreen/overlay/video.dart b/lib/widgets/fullscreen/overlay/video.dart
index 0664433df..9b7ad422a 100644
--- a/lib/widgets/fullscreen/overlay/video.dart
+++ b/lib/widgets/fullscreen/overlay/video.dart
@@ -101,7 +101,7 @@ class VideoControlOverlayState extends State<VideoControlOverlay> with SingleTic
                         scale: scale,
                         child: IconButton(
                           icon: Icon(OMIcons.openInNew),
-                          onPressed: () => AndroidAppService.open(entry.uri, entry.mimeType),
+                          onPressed: () => AndroidAppService.open(entry.uri, entry.mimeTypeAnySubtype),
                           tooltip: 'Open',
                         ),
                       ),