diff --git a/internal/socket/sys_linux_riscv64.go b/internal/socket/sys_linux_riscv64.go
index b6afdbb3..64f69f1d 100644
--- a/internal/socket/sys_linux_riscv64.go
+++ b/internal/socket/sys_linux_riscv64.go
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build riscv64
+
 package socket
 
 const (
diff --git a/internal/socket/zsys_linux_riscv64.go b/internal/socket/zsys_linux_riscv64.go
index 07d89a83..518618f0 100644
--- a/internal/socket/zsys_linux_riscv64.go
+++ b/internal/socket/zsys_linux_riscv64.go
@@ -1,6 +1,8 @@
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs defs_linux.go
 
+// +build riscv64
+
 package socket
 
 const (
diff --git a/ipv4/zsys_linux_riscv64.go b/ipv4/zsys_linux_riscv64.go
index c7f3e2fb..cf3bf2cb 100644
--- a/ipv4/zsys_linux_riscv64.go
+++ b/ipv4/zsys_linux_riscv64.go
@@ -1,6 +1,8 @@
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs defs_linux.go
 
+// +build riscv64
+
 package ipv4
 
 const (
diff --git a/ipv6/zsys_linux_riscv64.go b/ipv6/zsys_linux_riscv64.go
index 28a7ec25..77b3c3f0 100644
--- a/ipv6/zsys_linux_riscv64.go
+++ b/ipv6/zsys_linux_riscv64.go
@@ -1,6 +1,8 @@
 // Code generated by cmd/cgo -godefs; DO NOT EDIT.
 // cgo -godefs defs_linux.go
 
+// +build riscv64
+
 package ipv6
 
 const (