diff --git a/unix/mkpost.go b/unix/mkpost.go
index a2755180..366b2d48 100644
--- a/unix/mkpost.go
+++ b/unix/mkpost.go
@@ -101,9 +101,9 @@ func main() {
 	convertUtsnameRegex := regexp.MustCompile(`((Sys|Node|Domain)name|Release|Version|Machine)(\s+)\[(\d+)\]u?int8`)
 	b = convertUtsnameRegex.ReplaceAll(b, []byte("$1$3[$4]byte"))
 
-	// Convert [n]int8 to [n]byte in Statvfs_t members to simplify
+	// Convert [n]int8 to [n]byte in Statvfs_t and Statfs_t members to simplify
 	// conversion to string.
-	convertStatvfsRegex := regexp.MustCompile(`((Fstype|Mnton|Mntfrom)name)(\s+)\[(\d+)\]int8`)
+	convertStatvfsRegex := regexp.MustCompile(`(([Ff]stype|[Mm]nton|[Mm]ntfrom)name|mntfromspec)(\s+)\[(\d+)\]int8`)
 	b = convertStatvfsRegex.ReplaceAll(b, []byte("$1$3[$4]byte"))
 
 	// Convert []int8 to []byte in device mapper ioctl interface
diff --git a/unix/ztypes_openbsd_386.go b/unix/ztypes_openbsd_386.go
index baf5fe65..2ed718ca 100644
--- a/unix/ztypes_openbsd_386.go
+++ b/unix/ztypes_openbsd_386.go
@@ -94,10 +94,10 @@ type Statfs_t struct {
 	F_namemax     uint32
 	F_owner       uint32
 	F_ctime       uint64
-	F_fstypename  [16]int8
-	F_mntonname   [90]int8
-	F_mntfromname [90]int8
-	F_mntfromspec [90]int8
+	F_fstypename  [16]byte
+	F_mntonname   [90]byte
+	F_mntfromname [90]byte
+	F_mntfromspec [90]byte
 	Pad_cgo_0     [2]byte
 	Mount_info    [160]byte
 }
diff --git a/unix/ztypes_openbsd_amd64.go b/unix/ztypes_openbsd_amd64.go
index e21ae8ec..b4fb97eb 100644
--- a/unix/ztypes_openbsd_amd64.go
+++ b/unix/ztypes_openbsd_amd64.go
@@ -96,10 +96,10 @@ type Statfs_t struct {
 	F_namemax     uint32
 	F_owner       uint32
 	F_ctime       uint64
-	F_fstypename  [16]int8
-	F_mntonname   [90]int8
-	F_mntfromname [90]int8
-	F_mntfromspec [90]int8
+	F_fstypename  [16]byte
+	F_mntonname   [90]byte
+	F_mntfromname [90]byte
+	F_mntfromspec [90]byte
 	_             [2]byte
 	Mount_info    [160]byte
 }
diff --git a/unix/ztypes_openbsd_arm.go b/unix/ztypes_openbsd_arm.go
index f190651c..2c467504 100644
--- a/unix/ztypes_openbsd_arm.go
+++ b/unix/ztypes_openbsd_arm.go
@@ -98,10 +98,10 @@ type Statfs_t struct {
 	F_namemax     uint32
 	F_owner       uint32
 	F_ctime       uint64
-	F_fstypename  [16]int8
-	F_mntonname   [90]int8
-	F_mntfromname [90]int8
-	F_mntfromspec [90]int8
+	F_fstypename  [16]byte
+	F_mntonname   [90]byte
+	F_mntfromname [90]byte
+	F_mntfromspec [90]byte
 	_             [2]byte
 	Mount_info    [160]byte
 }
diff --git a/unix/ztypes_openbsd_arm64.go b/unix/ztypes_openbsd_arm64.go
index 84747c58..ddee0451 100644
--- a/unix/ztypes_openbsd_arm64.go
+++ b/unix/ztypes_openbsd_arm64.go
@@ -94,10 +94,10 @@ type Statfs_t struct {
 	F_namemax     uint32
 	F_owner       uint32
 	F_ctime       uint64
-	F_fstypename  [16]int8
-	F_mntonname   [90]int8
-	F_mntfromname [90]int8
-	F_mntfromspec [90]int8
+	F_fstypename  [16]byte
+	F_mntonname   [90]byte
+	F_mntfromname [90]byte
+	F_mntfromspec [90]byte
 	_             [2]byte
 	Mount_info    [160]byte
 }
diff --git a/unix/ztypes_openbsd_mips64.go b/unix/ztypes_openbsd_mips64.go
index ac5c8b63..eb13d4e8 100644
--- a/unix/ztypes_openbsd_mips64.go
+++ b/unix/ztypes_openbsd_mips64.go
@@ -94,10 +94,10 @@ type Statfs_t struct {
 	F_namemax     uint32
 	F_owner       uint32
 	F_ctime       uint64
-	F_fstypename  [16]int8
-	F_mntonname   [90]int8
-	F_mntfromname [90]int8
-	F_mntfromspec [90]int8
+	F_fstypename  [16]byte
+	F_mntonname   [90]byte
+	F_mntfromname [90]byte
+	F_mntfromspec [90]byte
 	_             [2]byte
 	Mount_info    [160]byte
 }