diff --git a/vlib/builtin/linux_bare/memory_managment.v b/vlib/builtin/linux_bare/memory_managment.v
index 8f8c3d829c4658..33d78d093b983e 100644
--- a/vlib/builtin/linux_bare/memory_managment.v
+++ b/vlib/builtin/linux_bare/memory_managment.v
@@ -2,7 +2,7 @@ module builtin
 
 import dlmalloc
 
-fn mm_alloc(size u64) (&byte, Errno) {
+fn mm_alloc(size u64) (&u8, Errno) {
 	// BEGIN CONSTS
 	// the constants need to be here, since the initialization of other constants,
 	// which happen before these ones would, require malloc
diff --git a/vlib/builtin/linux_bare/old/linuxsys_bare.v b/vlib/builtin/linux_bare/old/linuxsys_bare.v
index de9b2b68932b50..8f78e0fabae15b 100644
--- a/vlib/builtin/linux_bare/old/linuxsys_bare.v
+++ b/vlib/builtin/linux_bare/old/linuxsys_bare.v
@@ -337,16 +337,16 @@ fn split_int_errno(rc_in u64) (i64, Errno) {
 }
 
 // 0 sys_read unsigned int fd char *buf size_t count
-pub fn sys_read(fd i64, buf &byte, count u64) (i64, Errno) {
+pub fn sys_read(fd i64, buf &u8, count u64) (i64, Errno) {
 	return split_int_errno(sys_call3(0, u64(fd), u64(buf), count))
 }
 
 // 1 sys_write unsigned int fd, const char *buf, size_t count
-pub fn sys_write(fd i64, buf &byte, count u64) (i64, Errno) {
+pub fn sys_write(fd i64, buf &u8, count u64) (i64, Errno) {
 	return split_int_errno(sys_call3(1, u64(fd), u64(buf), count))
 }
 
-pub fn sys_open(filename &byte, flags i64, mode int) (i64, Errno) {
+pub fn sys_open(filename &u8, flags i64, mode int) (i64, Errno) {
 	// 2 sys_open  const char *filename  int flags int mode
 	return split_int_errno(sys_call3(2, u64(filename), u64(flags), u64(mode)))
 }
@@ -357,7 +357,7 @@ pub fn sys_close(fd i64) Errno {
 }
 
 // 9 sys_mmap unsigned long addr  unsigned long len unsigned long prot  unsigned long flags unsigned long fd  unsigned long off
-pub fn sys_mmap(addr &byte, len u64, prot Mm_prot, flags Map_flags, fildes u64, off u64) (&byte, Errno) {
+pub fn sys_mmap(addr &u8, len u64, prot Mm_prot, flags Map_flags, fildes u64, off u64) (&u8, Errno) {
 	rc := sys_call6(9, u64(addr), len, u64(prot), u64(flags), fildes, off)
 	a, e := split_int_errno(rc)
 	return &u8(a), e
diff --git a/vlib/builtin/linux_bare/old/mm_bare.v b/vlib/builtin/linux_bare/old/mm_bare.v
index 2acfb395622aa6..02032c2fe6fbcb 100644
--- a/vlib/builtin/linux_bare/old/mm_bare.v
+++ b/vlib/builtin/linux_bare/old/mm_bare.v
@@ -11,7 +11,7 @@ pub fn mm_pages(size u64) u32 {
 	return u32(pages)
 }
 
-pub fn mm_alloc(size u64) (&byte, Errno) {
+pub fn mm_alloc(size u64) (&u8, Errno) {
 	pages := mm_pages(size)
 	n_bytes := u64(pages * u32(Linux_mem.page_size))
 
@@ -24,7 +24,7 @@ pub fn mm_alloc(size u64) (&byte, Errno) {
 	return &u8(0), e
 }
 
-pub fn mm_free(addr &byte) Errno {
+pub fn mm_free(addr &u8) Errno {
 	ap := &int(addr - 4)
 	size := u64(*ap) * u64(Linux_mem.page_size)
 
@@ -41,7 +41,7 @@ pub fn mem_copy(dest0 voidptr, src0 voidptr, n isize) voidptr {
 }
 
 @[unsafe]
-pub fn malloc(n isize) &byte {
+pub fn malloc(n isize) &u8 {
 	if n < 0 {
 		panic('malloc(<0)')
 	}
diff --git a/vlib/builtin/linux_bare/old/string_bare.v b/vlib/builtin/linux_bare/old/string_bare.v
index da4e117b6db1b5..36053c8a5b8457 100644
--- a/vlib/builtin/linux_bare/old/string_bare.v
+++ b/vlib/builtin/linux_bare/old/string_bare.v
@@ -2,17 +2,17 @@ module builtin
 
 pub struct string {
 pub:
-	str &byte
+	str &u8
 	len int
 }
 
-pub fn strlen(s &byte) int {
+pub fn strlen(s &u8) int {
 	mut i := 0
 	for ; s[i] != 0; i++ {}
 	return i
 }
 
-pub fn tos(s &byte, len int) string {
+pub fn tos(s &u8, len int) string {
 	if s == 0 {
 		panic('tos(): nil string')
 	}
@@ -49,7 +49,7 @@ pub fn tos_clone(s byteptr) string {
 
 // Same as `tos`, but calculates the length. Called by `string(bytes)` casts.
 // Used only internally.
-pub fn tos2(s &byte) string {
+pub fn tos2(s &u8) string {
 	if s == 0 {
 		panic('tos2: nil string')
 	}
@@ -85,7 +85,7 @@ pub fn string_ne(s1 string, s2 string) bool {
 	return !string_eq(s1, s2)
 }
 
-pub fn i64_tos(buf &byte, len int, n0 i64, base int) string {
+pub fn i64_tos(buf &u8, len int, n0 i64, base int) string {
 	if base < 2 {
 		panic('base must be >= 2')
 	}
diff --git a/vlib/builtin/map.c.v b/vlib/builtin/map.c.v
index 86742e21906831..765eff0e54434b 100644
--- a/vlib/builtin/map.c.v
+++ b/vlib/builtin/map.c.v
@@ -1,6 +1,6 @@
 module builtin
 
-fn C.wyhash(&byte, u64, u64, &u64) u64
+fn C.wyhash(&u8, u64, u64, &u64) u64
 
 fn C.wyhash64(u64, u64) u64
 
diff --git a/vlib/builtin/wasm_bare/libc_impl.c.v b/vlib/builtin/wasm_bare/libc_impl.c.v
index c0a2f465f374eb..b4f69da108401c 100644
--- a/vlib/builtin/wasm_bare/libc_impl.c.v
+++ b/vlib/builtin/wasm_bare/libc_impl.c.v
@@ -105,11 +105,11 @@ fn memcmp(a &C.void, b &C.void, n usize) int {
 	return 0
 }
 
-fn vsprintf(str &char, format &char, ap &byte) int {
+fn vsprintf(str &char, format &char, ap &u8) int {
 	panic('vsprintf(): string interpolation is not supported in `-freestanding`')
 }
 
-fn vsnprintf(str &char, size usize, format &char, ap &byte) int {
+fn vsnprintf(str &char, size usize, format &char, ap &u8) int {
 	panic('vsnprintf(): string interpolation is not supported in `-freestanding`')
 }
 
@@ -119,17 +119,17 @@ enum Errno {
 }
 
 // not really needed
-fn bare_read(buf &byte, count u64) (i64, Errno) {
+fn bare_read(buf &u8, count u64) (i64, Errno) {
 	return 0, Errno.eerror
 }
 
-pub fn bare_print(buf &byte, len u64) {
+pub fn bare_print(buf &u8, len u64) {
 }
 
-fn bare_eprint(buf &byte, len u64) {
+fn bare_eprint(buf &u8, len u64) {
 }
 
-pub fn write(_fd i64, _buf &byte, _count u64) i64 {
+pub fn write(_fd i64, _buf &u8, _count u64) i64 {
 	return -1
 }
 
diff --git a/vlib/crypto/rand/rand_freebsd.c.v b/vlib/crypto/rand/rand_freebsd.c.v
index 889ab55d299804..8a225cce443c61 100644
--- a/vlib/crypto/rand/rand_freebsd.c.v
+++ b/vlib/crypto/rand/rand_freebsd.c.v
@@ -6,7 +6,7 @@ module rand
 
 #include <stdlib.h>
 
-fn C.arc4random_buf(p &byte, n usize)
+fn C.arc4random_buf(p &u8, n usize)
 
 // read returns an array of `bytes_needed` random bytes read from the OS.
 pub fn read(bytes_needed int) ![]u8 {
diff --git a/vlib/crypto/rand/rand_openbsd.c.v b/vlib/crypto/rand/rand_openbsd.c.v
index 889ab55d299804..8a225cce443c61 100644
--- a/vlib/crypto/rand/rand_openbsd.c.v
+++ b/vlib/crypto/rand/rand_openbsd.c.v
@@ -6,7 +6,7 @@ module rand
 
 #include <stdlib.h>
 
-fn C.arc4random_buf(p &byte, n usize)
+fn C.arc4random_buf(p &u8, n usize)
 
 // read returns an array of `bytes_needed` random bytes read from the OS.
 pub fn read(bytes_needed int) ![]u8 {
diff --git a/vlib/crypto/rand/rand_solaris.c.v b/vlib/crypto/rand/rand_solaris.c.v
index 5aa0ead344a25c..2146c989517dad 100644
--- a/vlib/crypto/rand/rand_solaris.c.v
+++ b/vlib/crypto/rand/rand_solaris.c.v
@@ -6,7 +6,7 @@ module rand
 
 #include <sys/random.h>
 
-fn C.getrandom(p &byte, n usize, flags u32) int
+fn C.getrandom(p &u8, n usize, flags u32) int
 
 const (
 	read_batch_size = 256
diff --git a/vlib/encoding/base32/base32.v b/vlib/encoding/base32/base32.v
index a33edb34fdeff9..51f9140d1f7624 100644
--- a/vlib/encoding/base32/base32.v
+++ b/vlib/encoding/base32/base32.v
@@ -351,7 +351,7 @@ fn (enc &Encoding) decode_(src_ []u8, mut dst []u8) !(int, bool) {
 
 // strip_newlines removes newline characters and returns the number
 // of non-newline characters copied to dst.
-// fn strip_newlines(mut dst []u8, src []byte) int {
+// fn strip_newlines(mut dst []u8, src []u8) int {
 // 	mut offset := 0
 // 	for b in src {
 // 		if b in [`\r`, `\n`] {
diff --git a/vlib/math/math_test.v b/vlib/math/math_test.v
index 4e17e2ea99d8a7..fb65421989ed81 100644
--- a/vlib/math/math_test.v
+++ b/vlib/math/math_test.v
@@ -1148,7 +1148,6 @@ fn test_maxof_minof() {
 	assert maxof[i32]() == 2147483647
 	assert maxof[i64]() == 9223372036854775807
 	assert maxof[u8]() == 255
-	assert maxof[byte]() == 255
 	assert maxof[u16]() == 65535
 	assert maxof[u32]() == 4294967295
 	assert maxof[u64]() == 18446744073709551615
@@ -1161,7 +1160,6 @@ fn test_maxof_minof() {
 	assert minof[i32]() == -2147483648
 	assert minof[i64]() == -9223372036854775807 - 1
 	assert minof[u8]() == 0
-	assert minof[byte]() == 0
 	assert minof[u16]() == 0
 	assert minof[u32]() == 0
 	assert minof[u64]() == 0
diff --git a/vlib/stbi/stbi.c.v b/vlib/stbi/stbi.c.v
index e260bdbb177063..dd205696c8699a 100644
--- a/vlib/stbi/stbi.c.v
+++ b/vlib/stbi/stbi.c.v
@@ -188,7 +188,7 @@ fn C.stbi_write_bmp(filename &char, w int, h int, comp int, buffer &u8) int
 fn C.stbi_write_tga(filename &char, w int, h int, comp int, buffer &u8) int
 fn C.stbi_write_jpg(filename &char, w int, h int, comp int, buffer &u8, quality int) int
 
-// fn C.stbi_write_hdr(filename &char, w int, h int, comp int, buffer &byte) int // buffer &byte => buffer &f32
+// fn C.stbi_write_hdr(filename &char, w int, h int, comp int, buffer &u8) int // buffer &u8 => buffer &f32
 
 // stbi_write_png write on path a PNG file
 // row_stride_in_bytes is usually equal to: w * comp
@@ -222,7 +222,7 @@ pub fn stbi_write_jpg(path string, w int, h int, comp int, buf &u8, quality int)
 }
 
 /*
-pub fn stbi_write_hdr(path string, w int, h int, comp int, buf &byte) ! {
+pub fn stbi_write_hdr(path string, w int, h int, comp int, buf &u8) ! {
 	if 0 == C.stbi_write_hdr(&char(path.str), w , h , comp , buf){
 		return error('stbi_image failed to write hdr file to "$path"')
 	}
diff --git a/vlib/v/checker/assign.v b/vlib/v/checker/assign.v
index 41919a403d3828..e7628f08a53318 100644
--- a/vlib/v/checker/assign.v
+++ b/vlib/v/checker/assign.v
@@ -537,7 +537,7 @@ or use an explicit `unsafe{ a[..] }`, if you do not want a copy of the slice.',
 			}
 			if node.op == .assign {
 				// `mut arr := [u8(1),2,3]`
-				// `arr = [byte(4),5,6]`
+				// `arr = [u8(4),5,6]`
 				left_info := left_sym.info as ast.Array
 				left_elem_type := c.table.unaliased_type(left_info.elem_type)
 				if left_type_unwrapped.nr_muls() == right_type_unwrapped.nr_muls()
diff --git a/vlib/v/tests/aliased_array_method_call_test.v b/vlib/v/tests/aliased_array_method_call_test.v
index 322ff306d5b7b1..91f26d6f57682e 100644
--- a/vlib/v/tests/aliased_array_method_call_test.v
+++ b/vlib/v/tests/aliased_array_method_call_test.v
@@ -1,10 +1,10 @@
-fn get_bytes_array() []byte {
-	return [byte(97), 98, 99]
+fn get_bytes_array() []u8 {
+	return [u8(97), 98, 99]
 }
 
 fn test_element_aliased_array_method_call() {
 	assert get_bytes_array().bytestr() == 'abc'
 
-	arr := [byte(97), 98, 99]
+	arr := [u8(97), 98, 99]
 	assert arr.bytestr() == 'abc'
 }
diff --git a/vlib/v/tests/assign_array_of_aliases_test.v b/vlib/v/tests/assign_array_of_aliases_test.v
index 3375b6fa590744..7b6730fbfff635 100644
--- a/vlib/v/tests/assign_array_of_aliases_test.v
+++ b/vlib/v/tests/assign_array_of_aliases_test.v
@@ -1,6 +1,6 @@
 fn test_assign_array_of_aliases() {
 	mut arr := [u8(1), 2, 3]
-	arr = [byte(4), 5, 6]
+	arr = [u8(4), 5, 6]
 
 	println(arr)
 	assert arr.len == 3
diff --git a/vlib/v/tests/check_init_value_for_arrays_of_option_test.v b/vlib/v/tests/check_init_value_for_arrays_of_option_test.v
index 18534917ead61f..7704864166d7fc 100644
--- a/vlib/v/tests/check_init_value_for_arrays_of_option_test.v
+++ b/vlib/v/tests/check_init_value_for_arrays_of_option_test.v
@@ -32,7 +32,6 @@ fn test_primitives() {
 	check_init_value_for_arrays_of_option[i64]()
 
 	check_init_value_for_arrays_of_option[u8]()
-	check_init_value_for_arrays_of_option[byte]()
 	check_init_value_for_arrays_of_option[u16]()
 	check_init_value_for_arrays_of_option[u32]()
 	check_init_value_for_arrays_of_option[u64]()
diff --git a/vlib/v/tests/const_from_bytes_test.v b/vlib/v/tests/const_from_bytes_test.v
index 70fcb07afcf598..8d7a90438f476b 100644
--- a/vlib/v/tests/const_from_bytes_test.v
+++ b/vlib/v/tests/const_from_bytes_test.v
@@ -1,7 +1,7 @@
-type UUID = [16]byte
+type UUID = [16]u8
 
-const codec_test_uuid = UUID([byte(0x6b), 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4,
-	0x00, 0xc0, 0x4f, 0xd4, 0x30, 0xc8]!)
+const codec_test_uuid = UUID([u8(0x6b), 0xa7, 0xb8, 0x10, 0x9d, 0xad, 0x11, 0xd1, 0x80, 0xb4, 0x00,
+	0xc0, 0x4f, 0xd4, 0x30, 0xc8]!)
 
 fn test_const_from_bytes() {
 	println(codec_test_uuid)
diff --git a/vlib/v/tests/fn_call_mut_array_of_aliases_args_test.v b/vlib/v/tests/fn_call_mut_array_of_aliases_args_test.v
index 348934aae083a4..1ba82a798b3470 100644
--- a/vlib/v/tests/fn_call_mut_array_of_aliases_args_test.v
+++ b/vlib/v/tests/fn_call_mut_array_of_aliases_args_test.v
@@ -1,8 +1,8 @@
-fn f1(mut b []byte) string {
+fn f1(mut b []u8) string {
 	return '${b}'
 }
 
-fn f2(b []byte) string {
+fn f2(b []u8) string {
 	return '${b}'
 }
 
diff --git a/vlib/v/tests/fn_with_array_of_aliases_argument_test.v b/vlib/v/tests/fn_with_array_of_aliases_argument_test.v
index 8a6479724872cc..f08fb2ffbc2984 100644
--- a/vlib/v/tests/fn_with_array_of_aliases_argument_test.v
+++ b/vlib/v/tests/fn_with_array_of_aliases_argument_test.v
@@ -11,7 +11,7 @@ fn (f Foo) show_array_of_u8(data []u8) string {
 }
 
 fn test_fn_with_array_of_aliases_argument() {
-	a := [byte(1), 2, 3]
+	a := [u8(1), 2, 3]
 
 	s1 := show_array_of_u8(a)
 	println(s1)
diff --git a/vlib/v/tests/typeof_simple_types_test.v b/vlib/v/tests/typeof_simple_types_test.v
index 67cb93fc48c1a6..850e09bfffcad4 100644
--- a/vlib/v/tests/typeof_simple_types_test.v
+++ b/vlib/v/tests/typeof_simple_types_test.v
@@ -27,7 +27,6 @@ fn test_typeof_for_builtin_int_types() {
 	assert typeof(u32(1)).name == 'u32'
 	assert typeof(u64(1)).name == 'u64'
 	//
-	assert typeof(byte(1)).name == 'byte'
 	assert typeof(char(1)).name == 'char'
 }
 
diff --git a/vlib/x/json2/encoder.v b/vlib/x/json2/encoder.v
index a32f1dde0c6a16..48363bcf6c27f9 100644
--- a/vlib/x/json2/encoder.v
+++ b/vlib/x/json2/encoder.v
@@ -429,8 +429,6 @@ fn (e &Encoder) encode_array[U](val []U, level int, mut wr io.Writer) ! {
 			e.encode_any(i64(val[i]), level + 1, mut wr)!
 		} $else $if U is u8 {
 			e.encode_any(u8(val[i]), level + 1, mut wr)!
-		} $else $if U is byte {
-			e.encode_any(u8(val[i]), level + 1, mut wr)!
 		} $else $if U is u16 {
 			e.encode_any(u16(val[i]), level + 1, mut wr)!
 		} $else $if U is u32 {
diff --git a/vlib/x/json2/json_module_compatibility_test/json_test.v b/vlib/x/json2/json_module_compatibility_test/json_test.v
index 57c3f60ace6b62..e9c00920cfd5d3 100644
--- a/vlib/x/json2/json_module_compatibility_test/json_test.v
+++ b/vlib/x/json2/json_module_compatibility_test/json_test.v
@@ -176,11 +176,11 @@ fn test_encode_alias_struct() {
 }
 
 struct StByteArray {
-	ba []byte
+	ba []u8
 }
 
 fn test_byte_array() {
-	assert json.encode(StByteArray{ ba: [byte(1), 2, 3, 4, 5] }) == '{"ba":[1,2,3,4,5]}'
+	assert json.encode(StByteArray{ ba: [u8(1), 2, 3, 4, 5] }) == '{"ba":[1,2,3,4,5]}'
 }
 
 struct Bar {