diff --git a/instagrapi/mixins/photo.py b/instagrapi/mixins/photo.py
index 82220ef1..b5b3d4de 100644
--- a/instagrapi/mixins/photo.py
+++ b/instagrapi/mixins/photo.py
@@ -235,7 +235,7 @@ def photo_upload(
             An object of Media class
         """
         path = Path(path)
-        valid_extensions = [".jpg", ".jpeg", ".png", "webp"]
+        valid_extensions = [".jpg", ".jpeg", ".png", ".webp"]
         if path.suffix.lower() not in valid_extensions:
             raise ValueError("Invalid file format. Only JPG/JPEG/PNG/WEBP files are supported.")