diff --git a/src/os/exec_posix.go b/src/os/exec_posix.go
index 4d453099..f100d631 100644
--- a/src/os/exec_posix.go
+++ b/src/os/exec_posix.go
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-package os
-
 //go:build aix || darwin || dragonfly || freebsd || (js && wasm) || linux || netbsd || openbsd || solaris || windows
 // +build aix darwin dragonfly freebsd js,wasm linux netbsd openbsd solaris windows
 
+package os
+
 import (
 	"syscall"
 )