diff --git a/vlib/builtin/linux_bare/libc_impl.v b/vlib/builtin/linux_bare/libc_impl.v
index 6ce11d6127..3310ad0320 100644
--- a/vlib/builtin/linux_bare/libc_impl.v
+++ b/vlib/builtin/linux_bare/libc_impl.v
@@ -116,28 +116,28 @@ fn __free(ptr &C.void) {
 	}
 }
 
-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`')
 }
 
 // not really needed
-fn bare_read(buf &byte, count u64) (i64, Errno) {
+fn bare_read(buf &u8, count u64) (i64, Errno) {
 	return sys_read(0, buf, count)
 }
 
-pub fn bare_print(buf &byte, len u64) {
+pub fn bare_print(buf &u8, len u64) {
 	sys_write(1, buf, len)
 }
 
-fn bare_eprint(buf &byte, len u64) {
+fn bare_eprint(buf &u8, len u64) {
 	sys_write(2, buf, len)
 }
 
-pub fn write(fd i64, buf &byte, count u64) i64 {
+pub fn write(fd i64, buf &u8, count u64) i64 {
 	x, _ := sys_write(fd, buf, count)
 	return x
 }
diff --git a/vlib/builtin/linux_bare/linux_syscalls.v b/vlib/builtin/linux_bare/linux_syscalls.v
index 4a374ca969..fdea3af681 100644
--- a/vlib/builtin/linux_bare/linux_syscalls.v
+++ b/vlib/builtin/linux_bare/linux_syscalls.v
@@ -231,17 +231,17 @@ fn split_int_errno(rc_in u64) (i64, Errno) {
 }
 
 // 0 sys_read
-fn sys_read(fd i64, buf &byte, count u64) (i64, Errno) {
+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
-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))
 }
 
 // 2 sys_open
-fn sys_open(filename &byte, flags i64, mode int) (i64, Errno) {
+fn sys_open(filename &u8, flags i64, mode int) (i64, Errno) {
 	return split_int_errno(sys_call3(2, u64(filename), u64(flags), u64(mode)))
 }
 
@@ -251,7 +251,7 @@ fn sys_close(fd i64) Errno {
 }
 
 // 9 sys_mmap
-fn sys_mmap(addr &byte, len u64, prot MemProt, flags MapFlags, fildes i64, off u64) (&byte, Errno) {
+fn sys_mmap(addr &u8, len u64, prot MemProt, flags MapFlags, fildes i64, 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
@@ -263,7 +263,7 @@ fn sys_munmap(addr voidptr, len u64) Errno {
 }
 
 // 25 sys_mremap
-fn sys_mremap(old_addr voidptr, old_len u64, new_len u64, flags u64) (&byte, Errno) {
+fn sys_mremap(old_addr voidptr, old_len u64, new_len u64, flags u64) (&u8, Errno) {
 	rc := sys_call4(25, u64(old_addr), old_len, new_len, flags)
 	a, e := split_int_errno(rc)
 	return &u8(a), e
@@ -305,7 +305,7 @@ fn sys_dup2(oldfd int, newfd int) (i64, Errno) {
 }
 
 // 59  sys_execve
-fn sys_execve(filename &byte, argv []&byte, envp []&byte) int {
+fn sys_execve(filename &u8, argv []&u8, envp []&u8) int {
 	return int(sys_call3(59, u64(filename), argv.data, envp.data))
 }