diff --git a/unix/linux/types.go b/unix/linux/types.go
index f07a3b94..400547d8 100644
--- a/unix/linux/types.go
+++ b/unix/linux/types.go
@@ -1055,7 +1055,7 @@ const (
 )
 
 // netfilter nfnetlink
-type Nfgenmsg = C.struct_nfgenmsg
+type Nfgenmsg C.struct_nfgenmsg
 
 const (
 	NFNL_BATCH_UNSPEC = C.NFNL_BATCH_UNSPEC
diff --git a/unix/ztypes_linux_386.go b/unix/ztypes_linux_386.go
index f11f1659..40474620 100644
--- a/unix/ztypes_linux_386.go
+++ b/unix/ztypes_linux_386.go
@@ -1382,7 +1382,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_amd64.go b/unix/ztypes_linux_amd64.go
index 2cd848a6..2ab0cb9e 100644
--- a/unix/ztypes_linux_amd64.go
+++ b/unix/ztypes_linux_amd64.go
@@ -1402,7 +1402,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_arm.go b/unix/ztypes_linux_arm.go
index 5c400e6c..18d577b9 100644
--- a/unix/ztypes_linux_arm.go
+++ b/unix/ztypes_linux_arm.go
@@ -1371,7 +1371,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_arm64.go b/unix/ztypes_linux_arm64.go
index 9446943b..6ea80563 100644
--- a/unix/ztypes_linux_arm64.go
+++ b/unix/ztypes_linux_arm64.go
@@ -1381,7 +1381,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_mips.go b/unix/ztypes_linux_mips.go
index 12228544..e0a39322 100644
--- a/unix/ztypes_linux_mips.go
+++ b/unix/ztypes_linux_mips.go
@@ -1376,7 +1376,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_mips64.go b/unix/ztypes_linux_mips64.go
index 89e2b726..838135e2 100644
--- a/unix/ztypes_linux_mips64.go
+++ b/unix/ztypes_linux_mips64.go
@@ -1383,7 +1383,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_mips64le.go b/unix/ztypes_linux_mips64le.go
index aea730b7..a9d0131f 100644
--- a/unix/ztypes_linux_mips64le.go
+++ b/unix/ztypes_linux_mips64le.go
@@ -1383,7 +1383,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_mipsle.go b/unix/ztypes_linux_mipsle.go
index a59aef9f..4f6f1455 100644
--- a/unix/ztypes_linux_mipsle.go
+++ b/unix/ztypes_linux_mipsle.go
@@ -1376,7 +1376,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_ppc64.go b/unix/ztypes_linux_ppc64.go
index dc2b41c2..9ddd4701 100644
--- a/unix/ztypes_linux_ppc64.go
+++ b/unix/ztypes_linux_ppc64.go
@@ -1391,7 +1391,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_ppc64le.go b/unix/ztypes_linux_ppc64le.go
index 3fc7fb26..3a5cc696 100644
--- a/unix/ztypes_linux_ppc64le.go
+++ b/unix/ztypes_linux_ppc64le.go
@@ -1391,7 +1391,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16
diff --git a/unix/ztypes_linux_s390x.go b/unix/ztypes_linux_s390x.go
index 16817182..032a71bb 100644
--- a/unix/ztypes_linux_s390x.go
+++ b/unix/ztypes_linux_s390x.go
@@ -1408,7 +1408,7 @@ const (
 	NFPROTO_NUMPROTO = 0xd
 )
 
-type Nfgenmsg = struct {
+type Nfgenmsg struct {
 	Nfgen_family uint8
 	Version      uint8
 	Res_id       uint16