diff --git a/src/os/executable_dragonfly.go b/src/os/executable_dragonfly.go
index 19c2ae890f9a53..939c6f6ebbac21 100644
--- a/src/os/executable_dragonfly.go
+++ b/src/os/executable_dragonfly.go
@@ -10,3 +10,5 @@ const (
 	_KERN_PROC          = 14
 	_KERN_PROC_PATHNAME = 9
 )
+
+var executableMIB = [4]int32{_CTL_KERN, _KERN_PROC, _KERN_PROC_PATHNAME, -1}
diff --git a/src/os/executable_freebsd.go b/src/os/executable_freebsd.go
index 95f1a93cb9512c..da40fcb32ab913 100644
--- a/src/os/executable_freebsd.go
+++ b/src/os/executable_freebsd.go
@@ -10,3 +10,5 @@ const (
 	_KERN_PROC          = 14
 	_KERN_PROC_PATHNAME = 12
 )
+
+var executableMIB = [4]int32{_CTL_KERN, _KERN_PROC, _KERN_PROC_PATHNAME, -1}
diff --git a/src/os/executable_netbsd.go b/src/os/executable_netbsd.go
new file mode 100644
index 00000000000000..fd075390e6c763
--- /dev/null
+++ b/src/os/executable_netbsd.go
@@ -0,0 +1,14 @@
+// Copyright 2024 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package os
+
+// From NetBSD's <sys/sysctl.h>
+const (
+	_CTL_KERN           = 1
+	_KERN_PROC_ARGS     = 48
+	_KERN_PROC_PATHNAME = 5
+)
+
+var executableMIB = [4]int32{_CTL_KERN, _KERN_PROC_ARGS, -1, _KERN_PROC_PATHNAME}
diff --git a/src/os/executable_procfs.go b/src/os/executable_procfs.go
index 6a2cd10be7c402..a52631c0bb2fa1 100644
--- a/src/os/executable_procfs.go
+++ b/src/os/executable_procfs.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build linux || netbsd
+//go:build linux
 
 package os
 
@@ -19,8 +19,6 @@ func executable() (string, error) {
 		return "", errors.New("Executable not implemented for " + runtime.GOOS)
 	case "linux", "android":
 		procfn = "/proc/self/exe"
-	case "netbsd":
-		procfn = "/proc/curproc/exe"
 	}
 	path, err := Readlink(procfn)
 
diff --git a/src/os/executable_sysctl.go b/src/os/executable_sysctl.go
index 3c2aeacf7da53f..8b52e92c413cb1 100644
--- a/src/os/executable_sysctl.go
+++ b/src/os/executable_sysctl.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build freebsd || dragonfly
+//go:build freebsd || dragonfly || netbsd
 
 package os
 
@@ -12,11 +12,9 @@ import (
 )
 
 func executable() (string, error) {
-	mib := [4]int32{_CTL_KERN, _KERN_PROC, _KERN_PROC_PATHNAME, -1}
-
 	n := uintptr(0)
 	// get length
-	_, _, err := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, 0, uintptr(unsafe.Pointer(&n)), 0, 0)
+	_, _, err := syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&executableMIB[0])), 4, 0, uintptr(unsafe.Pointer(&n)), 0, 0)
 	if err != 0 {
 		return "", err
 	}
@@ -24,7 +22,7 @@ func executable() (string, error) {
 		return "", nil
 	}
 	buf := make([]byte, n)
-	_, _, err = syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&mib[0])), 4, uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&n)), 0, 0)
+	_, _, err = syscall.Syscall6(syscall.SYS___SYSCTL, uintptr(unsafe.Pointer(&executableMIB[0])), 4, uintptr(unsafe.Pointer(&buf[0])), uintptr(unsafe.Pointer(&n)), 0, 0)
 	if err != 0 {
 		return "", err
 	}