diff --git a/lib/std/os/windows/bits.zig b/lib/std/os/windows/bits.zig
index 6eeafe089f02a29aace74eee2efd8a5e8480a742..6b0a375b944aff100c288913e5ee8395b40e996c 100644
--- a/lib/std/os/windows/bits.zig
+++ b/lib/std/os/windows/bits.zig
@@ -84,8 +84,8 @@ pub const HLOCAL = HANDLE;
 pub const LANGID = c_ushort;
 
 pub const WPARAM = usize;
-pub const LPARAM = ?*c_void;
-pub const LRESULT = ?*c_void;
+pub const LPARAM = LONG_PTR;
+pub const LRESULT = LONG_PTR;
 
 pub const va_list = *opaque {};