diff --git a/stdlib/fcntl.pyi b/stdlib/fcntl.pyi
index 141f9ee93..47766357c 100644
--- a/stdlib/fcntl.pyi
+++ b/stdlib/fcntl.pyi
@@ -3,94 +3,94 @@ from _typeshed import FileDescriptorLike, ReadOnlyBuffer, WriteableBuffer
 from typing import Any, overload
 from typing_extensions import Literal
 
-FASYNC: int
-FD_CLOEXEC: int
-DN_ACCESS: int
-DN_ATTRIB: int
-DN_CREATE: int
-DN_DELETE: int
-DN_MODIFY: int
-DN_MULTISHOT: int
-DN_RENAME: int
-F_DUPFD: int
-F_DUPFD_CLOEXEC: int
-F_FULLFSYNC: int
-F_EXLCK: int
-F_GETFD: int
-F_GETFL: int
-F_GETLEASE: int
-F_GETLK: int
-F_GETLK64: int
-F_GETOWN: int
-F_NOCACHE: int
-F_GETSIG: int
-F_NOTIFY: int
-F_RDLCK: int
-F_SETFD: int
-F_SETFL: int
-F_SETLEASE: int
-F_SETLK: int
-F_SETLK64: int
-F_SETLKW: int
-F_SETLKW64: int
-if sys.version_info >= (3, 9) and sys.platform == "linux":
-    F_OFD_GETLK: int
-    F_OFD_SETLK: int
-    F_OFD_SETLKW: int
-F_SETOWN: int
-F_SETSIG: int
-F_SHLCK: int
-F_UNLCK: int
-F_WRLCK: int
-I_ATMARK: int
-I_CANPUT: int
-I_CKBAND: int
-I_FDINSERT: int
-I_FIND: int
-I_FLUSH: int
-I_FLUSHBAND: int
-I_GETBAND: int
-I_GETCLTIME: int
-I_GETSIG: int
-I_GRDOPT: int
-I_GWROPT: int
-I_LINK: int
-I_LIST: int
-I_LOOK: int
-I_NREAD: int
-I_PEEK: int
-I_PLINK: int
-I_POP: int
-I_PUNLINK: int
-I_PUSH: int
-I_RECVFD: int
-I_SENDFD: int
-I_SETCLTIME: int
-I_SETSIG: int
-I_SRDOPT: int
-I_STR: int
-I_SWROPT: int
-I_UNLINK: int
-LOCK_EX: int
-LOCK_MAND: int
-LOCK_NB: int
-LOCK_READ: int
-LOCK_RW: int
-LOCK_SH: int
-LOCK_UN: int
-LOCK_WRITE: int
-
-@overload
-def fcntl(__fd: FileDescriptorLike, __cmd: int, __arg: int = ...) -> int: ...
-@overload
-def fcntl(__fd: FileDescriptorLike, __cmd: int, __arg: bytes) -> bytes: ...
-@overload
-def ioctl(__fd: FileDescriptorLike, __request: int, __arg: int = ..., __mutate_flag: bool = ...) -> int: ...
-@overload
-def ioctl(__fd: FileDescriptorLike, __request: int, __arg: WriteableBuffer, __mutate_flag: Literal[True] = ...) -> int: ...
-@overload
-def ioctl(__fd: FileDescriptorLike, __request: int, __arg: WriteableBuffer, __mutate_flag: Literal[False]) -> bytes: ...
-@overload
-def ioctl(__fd: FileDescriptorLike, __request: int, __arg: ReadOnlyBuffer, __mutate_flag: bool = ...) -> bytes: ...
-def flock(__fd: FileDescriptorLike, __operation: int) -> None: ...
-def lockf(__fd: FileDescriptorLike, __cmd: int, __len: int = ..., __start: int = ..., __whence: int = ...) -> Any: ...
+if sys.platform != "win32":
+    FASYNC: int
+    FD_CLOEXEC: int
+    DN_ACCESS: int
+    DN_ATTRIB: int
+    DN_CREATE: int
+    DN_DELETE: int
+    DN_MODIFY: int
+    DN_MULTISHOT: int
+    DN_RENAME: int
+    F_DUPFD: int
+    F_DUPFD_CLOEXEC: int
+    F_FULLFSYNC: int
+    F_EXLCK: int
+    F_GETFD: int
+    F_GETFL: int
+    F_GETLEASE: int
+    F_GETLK: int
+    F_GETLK64: int
+    F_GETOWN: int
+    F_NOCACHE: int
+    F_GETSIG: int
+    F_NOTIFY: int
+    F_RDLCK: int
+    F_SETFD: int
+    F_SETFL: int
+    F_SETLEASE: int
+    F_SETLK: int
+    F_SETLK64: int
+    F_SETLKW: int
+    F_SETLKW64: int
+    if sys.version_info >= (3, 9) and sys.platform == "linux":
+        F_OFD_GETLK: int
+        F_OFD_SETLK: int
+        F_OFD_SETLKW: int
+    F_SETOWN: int
+    F_SETSIG: int
+    F_SHLCK: int
+    F_UNLCK: int
+    F_WRLCK: int
+    I_ATMARK: int
+    I_CANPUT: int
+    I_CKBAND: int
+    I_FDINSERT: int
+    I_FIND: int
+    I_FLUSH: int
+    I_FLUSHBAND: int
+    I_GETBAND: int
+    I_GETCLTIME: int
+    I_GETSIG: int
+    I_GRDOPT: int
+    I_GWROPT: int
+    I_LINK: int
+    I_LIST: int
+    I_LOOK: int
+    I_NREAD: int
+    I_PEEK: int
+    I_PLINK: int
+    I_POP: int
+    I_PUNLINK: int
+    I_PUSH: int
+    I_RECVFD: int
+    I_SENDFD: int
+    I_SETCLTIME: int
+    I_SETSIG: int
+    I_SRDOPT: int
+    I_STR: int
+    I_SWROPT: int
+    I_UNLINK: int
+    LOCK_EX: int
+    LOCK_MAND: int
+    LOCK_NB: int
+    LOCK_READ: int
+    LOCK_RW: int
+    LOCK_SH: int
+    LOCK_UN: int
+    LOCK_WRITE: int
+    @overload
+    def fcntl(__fd: FileDescriptorLike, __cmd: int, __arg: int = ...) -> int: ...
+    @overload
+    def fcntl(__fd: FileDescriptorLike, __cmd: int, __arg: bytes) -> bytes: ...
+    @overload
+    def ioctl(__fd: FileDescriptorLike, __request: int, __arg: int = ..., __mutate_flag: bool = ...) -> int: ...
+    @overload
+    def ioctl(__fd: FileDescriptorLike, __request: int, __arg: WriteableBuffer, __mutate_flag: Literal[True] = ...) -> int: ...
+    @overload
+    def ioctl(__fd: FileDescriptorLike, __request: int, __arg: WriteableBuffer, __mutate_flag: Literal[False]) -> bytes: ...
+    @overload
+    def ioctl(__fd: FileDescriptorLike, __request: int, __arg: ReadOnlyBuffer, __mutate_flag: bool = ...) -> bytes: ...
+    def flock(__fd: FileDescriptorLike, __operation: int) -> None: ...
+    def lockf(__fd: FileDescriptorLike, __cmd: int, __len: int = ..., __start: int = ..., __whence: int = ...) -> Any: ...