diff --git a/cmds/cpuns/main_unix.go b/cmds/cpuns/main_unix.go
index 7027e5a..eda42e3 100644
--- a/cmds/cpuns/main_unix.go
+++ b/cmds/cpuns/main_unix.go
@@ -55,7 +55,7 @@ func checkprivate() error {
 		return err
 	}
 	if len(mnts) != 1 {
-		return fmt.Errorf("got more than 1 mount for /(%v):%v", mnts, os.ErrInvalid)
+		return fmt.Errorf("got more than 1 mount for /(%v):%w", mnts, os.ErrInvalid)
 	}
 	entry := mnts[0]
 	isShared := strings.Contains(entry.Optional, "shared:1")
diff --git a/mount/mount_freebsd.go b/mount/mount_freebsd.go
index 26adbb2..297eecb 100644
--- a/mount/mount_freebsd.go
+++ b/mount/mount_freebsd.go
@@ -119,7 +119,7 @@ func mount(m mounter, fstab string) error {
 		// we do no further manipulation of opts.
 		flags, data := parse(opts)
 		if e := m(dev, where, fstype, flags, data); e != nil {
-			err = errors.Join(err, fmt.Errorf("Mount(%q, %q, %q, %q=>(%#x, %q)): %v", dev, where, fstype, opts, flags, data, e))
+			err = errors.Join(err, fmt.Errorf("Mount(%q, %q, %q, %q=>(%#x, %q)): %w", dev, where, fstype, opts, flags, data, e))
 		}
 	}
 	return err
diff --git a/mount/mount_linux.go b/mount/mount_linux.go
index 3a77d80..f8b0237 100644
--- a/mount/mount_linux.go
+++ b/mount/mount_linux.go
@@ -109,7 +109,7 @@ func mount(m mounter, fstab string) error {
 		// we do no further manipulation of opts.
 		flags, data := parse(opts)
 		if e := m(dev, where, fstype, flags, data); e != nil {
-			err = errors.Join(err, fmt.Errorf("Mount(%q, %q, %q, %q=>(%#x, %q)): %v", dev, where, fstype, opts, flags, data, e))
+			err = errors.Join(err, fmt.Errorf("Mount(%q, %q, %q, %q=>(%#x, %q)): %w", dev, where, fstype, opts, flags, data, e))
 		}
 	}
 	return err