diff --git a/client/ayon_core/hosts/maya/plugins/publish/extract_thumbnail.py b/client/ayon_core/hosts/maya/plugins/publish/extract_thumbnail.py
index d3140487a6..b9a5659053 100644
--- a/client/ayon_core/hosts/maya/plugins/publish/extract_thumbnail.py
+++ b/client/ayon_core/hosts/maya/plugins/publish/extract_thumbnail.py
@@ -73,7 +73,7 @@ class ExtractThumbnail(publish.Extractor):
 
         representation = {
             "name": "thumbnail",
-            "ext": "jpg",
+            "ext": os.path.splitext(thumbnail)[1].lstrip("."),
             "files": thumbnail,
             "stagingDir": dst_staging,
             "thumbnail": True