diff --git a/lib/std/os/windows/bits.zig b/lib/std/os/windows/bits.zig
index bf786d5c91502d04f061e8f8caf83adbff548158..f1f583b68dca88ec317336ee92799f7d76ee31ef 100644
--- a/lib/std/os/windows/bits.zig
+++ b/lib/std/os/windows/bits.zig
@@ -60,6 +60,7 @@ pub const SIZE_T = usize;
 pub const TCHAR = if (UNICODE) WCHAR else u8;
 pub const UINT = c_uint;
 pub const ULONG_PTR = usize;
+pub const LONG_PTR = isize;
 pub const DWORD_PTR = ULONG_PTR;
 pub const UNICODE = false;
 pub const WCHAR = u16;