diff --git a/src/PIL/GdImageFile.py b/src/PIL/GdImageFile.py
index 315ac6d6c..88b87a22c 100644
--- a/src/PIL/GdImageFile.py
+++ b/src/PIL/GdImageFile.py
@@ -32,7 +32,7 @@ from typing import IO
 from . import ImageFile, ImagePalette, UnidentifiedImageError
 from ._binary import i16be as i16
 from ._binary import i32be as i32
-from ._typing import FileDescriptor, StrOrBytesPath
+from ._typing import StrOrBytesPath
 
 
 class GdImageFile(ImageFile.ImageFile):
@@ -81,9 +81,7 @@ class GdImageFile(ImageFile.ImageFile):
         ]
 
 
-def open(
-    fp: StrOrBytesPath | FileDescriptor | IO[bytes], mode: str = "r"
-) -> GdImageFile:
+def open(fp: StrOrBytesPath | IO[bytes], mode: str = "r") -> GdImageFile:
     """
     Load texture from a GD image file.
 
diff --git a/src/PIL/_typing.py b/src/PIL/_typing.py
index 346702037..7075e8672 100644
--- a/src/PIL/_typing.py
+++ b/src/PIL/_typing.py
@@ -27,8 +27,7 @@ class SupportsRead(Protocol[_T_co]):
     def read(self, __length: int = ...) -> _T_co: ...
 
 
-FileDescriptor = int
 StrOrBytesPath = Union[str, bytes, "os.PathLike[str]", "os.PathLike[bytes]"]
 
 
-__all__ = ["FileDescriptor", "TypeGuard", "StrOrBytesPath", "SupportsRead"]
+__all__ = ["TypeGuard", "StrOrBytesPath", "SupportsRead"]