diff --git a/README.md b/README.md
index 71620774..7474b4f0 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@ Alternatively, `golangci-lint` can be [installed locally][lint-install] and run
 
 ### Go Generate
 
-The pipeline checks that auto-generated code, via `go generate`, be up to date.
+The pipeline checks that auto-generated code, via `go generate`, are up to date.
 
 This can be done for the entire repo:
 
diff --git a/backup.go b/backup.go
index 53fbac7e..09621c88 100644
--- a/backup.go
+++ b/backup.go
@@ -39,7 +39,7 @@ const (
 //nolint:revive // var-naming: ALL_CAPS
 const (
 	WRITE_DAC              = windows.WRITE_DAC
-	WRITE_OWNER            = windows.WRITE_DAC
+	WRITE_OWNER            = windows.WRITE_OWNER
 	ACCESS_SYSTEM_SECURITY = windows.ACCESS_SYSTEM_SECURITY
 )
 
diff --git a/backup_test.go b/backup_test.go
index afd26c02..112726e6 100644
--- a/backup_test.go
+++ b/backup_test.go
@@ -8,6 +8,8 @@ import (
 	"os"
 	"syscall"
 	"testing"
+
+	"golang.org/x/sys/windows"
 )
 
 var testFileName string
@@ -200,12 +202,7 @@ func makeSparseFile() error {
 	}
 	defer f.Close()
 
-	const (
-		fsctlSetSparse   = 0x000900c4
-		fsctlSetZeroData = 0x000980c8
-	)
-
-	err = syscall.DeviceIoControl(syscall.Handle(f.Fd()), fsctlSetSparse, nil, 0, nil, 0, nil, nil)
+	err = syscall.DeviceIoControl(syscall.Handle(f.Fd()), windows.FSCTL_SET_SPARSE, nil, 0, nil, 0, nil, nil)
 	if err != nil {
 		return err
 	}