diff --git a/lib/std/os/windows/ntdll.zig b/lib/std/os/windows/ntdll.zig
index cef623cd39b18db3f1dbd7d3d670da5021141e0e..4257d8f5de267aed6796447bcd261bac87d11c04 100644
--- a/lib/std/os/windows/ntdll.zig
+++ b/lib/std/os/windows/ntdll.zig
@@ -242,7 +242,7 @@ pub extern "ntdll" fn NtUnlockFile(
 ) callconv(.winapi) NTSTATUS;
 
 pub extern "ntdll" fn NtQueryObject(
-    Handle: HANDLE,
+    Handle: ?HANDLE,
     ObjectInformationClass: OBJECT.INFORMATION_CLASS,
     ObjectInformation: ?PVOID,
     ObjectInformationLength: ULONG,