diff --git a/vlib/v/ast/types.v b/vlib/v/ast/types.v
index 67aa88a22a..aab47f53e7 100644
--- a/vlib/v/ast/types.v
+++ b/vlib/v/ast/types.v
@@ -398,11 +398,14 @@ pub const (
 	int_literal_type_idx   = 26
 	thread_type_idx        = 27
 	error_type_idx         = 28
+	u8_type_idx            = 29
 )
 
 pub const (
 	integer_type_idxs          = [i8_type_idx, i16_type_idx, int_type_idx, i64_type_idx,
-		byte_type_idx, u16_type_idx, u32_type_idx, u64_type_idx, int_literal_type_idx, rune_type_idx]
+		byte_type_idx, u8_type_idx, u16_type_idx, u32_type_idx, u64_type_idx, int_literal_type_idx,
+		rune_type_idx,
+	]
 	signed_integer_type_idxs   = [i8_type_idx, i16_type_idx, int_type_idx, i64_type_idx]
 	unsigned_integer_type_idxs = [byte_type_idx, u16_type_idx, u32_type_idx, u64_type_idx]
 	float_type_idxs            = [f32_type_idx, f64_type_idx, float_literal_type_idx]
@@ -424,6 +427,7 @@ pub const (
 	i16_type           = new_type(i16_type_idx)
 	i64_type           = new_type(i64_type_idx)
 	byte_type          = new_type(byte_type_idx)
+	u8_type            = new_type(u8_type_idx)
 	u16_type           = new_type(u16_type_idx)
 	u32_type           = new_type(u32_type_idx)
 	u64_type           = new_type(u64_type_idx)
@@ -457,10 +461,11 @@ pub fn merge_types(params ...[]Type) []Type {
 }
 
 pub const (
+	// must be in the same order as the idx consts above
 	builtin_type_names = ['void', 'voidptr', 'charptr', 'byteptr', 'i8', 'i16', 'int', 'i64', 'u16',
 		'u32', 'u64', 'int_literal', 'f32', 'f64', 'float_literal', 'string', 'char', 'byte', 'bool',
 		'none', 'array', 'array_fixed', 'map', 'chan', 'any', 'struct', 'mapnode', 'size_t', 'rune',
-		'thread', 'Error']
+		'thread', 'Error', 'u8']
 )
 
 pub struct MultiReturn {
@@ -494,6 +499,7 @@ pub enum Kind {
 	int
 	i64
 	byte
+	u8
 	u16
 	u32
 	u64
@@ -664,6 +670,7 @@ pub fn (mut t Table) register_builtin_type_symbols() {
 		}
 	)
 	t.register_type_symbol(kind: .interface_, name: 'IError', cname: 'IError', mod: 'builtin')
+	t.register_type_symbol(kind: .u8, name: 'u8', cname: 'u8', mod: 'builtin')
 }
 
 [inline]
@@ -719,6 +726,7 @@ pub fn (k Kind) str() string {
 		.i16 { 'i16' }
 		.i64 { 'i64' }
 		.byte { 'byte' }
+		.u8 { 'u8' }
 		.u16 { 'u16' }
 		.u32 { 'u32' }
 		.u64 { 'u64' }
@@ -917,7 +925,7 @@ pub fn (t &Table) type_to_str_using_aliases(typ Type, import_aliases map[string]
 		.int_literal, .float_literal {
 			res = sym.name
 		}
-		.i8, .i16, .int, .i64, .byte, .u16, .u32, .u64, .f32, .f64, .char, .rune, .string, .bool,
+		.i8, .i16, .int, .i64, .byte, .u8, .u16, .u32, .u64, .f32, .f64, .char, .rune, .string, .bool,
 		.none_, .byteptr, .voidptr, .charptr {
 			// primitive types
 			if sym.kind == .byteptr {
diff --git a/vlib/v/gen/js/builtin_types.v b/vlib/v/gen/js/builtin_types.v
index 87b9ab77c7..6fb9115f0e 100644
--- a/vlib/v/gen/js/builtin_types.v
+++ b/vlib/v/gen/js/builtin_types.v
@@ -19,8 +19,8 @@ fn (mut g JsGen) to_js_typ_val(t ast.Type) string {
 	mut styp := ''
 	mut prefix := if g.file.mod.name == 'builtin' { 'new ' } else { '' }
 	match sym.kind {
-		.i8, .i16, .int, .i64, .byte, .u16, .u32, .u64, .f32, .f64, .int_literal, .float_literal,
-		.size_t {
+		.i8, .i16, .int, .i64, .byte, .u8, .u16, .u32, .u64, .f32, .f64, .int_literal,
+		.float_literal, .size_t {
 			styp = '$prefix${g.sym_to_js_typ(sym)}(0)'
 		}
 		.bool {
@@ -132,8 +132,8 @@ pub fn (mut g JsGen) typ(t ast.Type) string {
 		.byteptr, .charptr {
 			styp = '${g.sym_to_js_typ(sym)}'
 		}
-		.i8, .i16, .int, .i64, .byte, .u16, .u32, .u64, .f32, .f64, .int_literal, .float_literal,
-		.size_t {
+		.i8, .i16, .int, .i64, .byte, .u8, .u16, .u32, .u64, .f32, .f64, .int_literal,
+		.float_literal, .size_t {
 			styp = '${g.sym_to_js_typ(sym)}'
 		}
 		.bool {