diff --git a/yt_dlp/extractor/facebook.py b/yt_dlp/extractor/facebook.py
index 84856abe1..2fbdf1c37 100644
--- a/yt_dlp/extractor/facebook.py
+++ b/yt_dlp/extractor/facebook.py
@@ -682,6 +682,9 @@ def parse_attachment(attachment, key='media'):
                 # honor precise duration in video info
                 if video_info.get('duration'):
                     webpage_info['duration'] = video_info['duration']
+                # preserve preferred_thumbnail in video info
+                if video_info.get('thumbnail'):
+                    webpage_info['thumbnail'] = video_info['thumbnail']
                 return merge_dicts(webpage_info, video_info)
 
         if not video_data: