diff --git a/pyiceberg/manifest.py b/pyiceberg/manifest.py
index e2352abca6..a56da5fc05 100644
--- a/pyiceberg/manifest.py
+++ b/pyiceberg/manifest.py
@@ -30,7 +30,7 @@
     Optional,
     Tuple,
     Type,
-    Union
+    Union,
 )
 
 from cachetools import LRUCache, cached
@@ -101,7 +101,7 @@ class FileFormat(str, Enum):
     @classmethod
     def _missing_(cls, value: object) -> Union[None, str]:
         for member in cls:
-            if getattr(member, "value") == str(value).upper():
+            if member.value == str(value).upper():
                 return member
         return None