diff --git a/plan9/syscall.go b/plan9/syscall.go
index a25223b8..ea971285 100644
--- a/plan9/syscall.go
+++ b/plan9/syscall.go
@@ -29,8 +29,6 @@ import (
 	"bytes"
 	"strings"
 	"unsafe"
-
-	"golang.org/x/sys/internal/unsafeheader"
 )
 
 // ByteSliceFromString returns a NUL-terminated slice of bytes
@@ -82,12 +80,7 @@ func BytePtrToString(p *byte) string {
 		ptr = unsafe.Pointer(uintptr(ptr) + 1)
 	}
 
-	var s []byte
-	h := (*unsafeheader.Slice)(unsafe.Pointer(&s))
-	h.Data = unsafe.Pointer(p)
-	h.Len = n
-	h.Cap = n
-
+	s := unsafe.Slice((*byte)(unsafe.Pointer(p)), n)
 	return string(s)
 }