diff --git a/cmd/tools/vdoctor.v b/cmd/tools/vdoctor.v
index db6ece88d5..64c5374714 100644
--- a/cmd/tools/vdoctor.v
+++ b/cmd/tools/vdoctor.v
@@ -30,7 +30,7 @@ fn (mut a App) collect_info() {
 	if runtime.is_little_endian() {
 		arch_details << 'little endian'
 	}
-	if os_kind == 'mac' {
+	if os_kind == 'macos' {
 		arch_details << a.cmd(command:'sysctl -n machdep.cpu.brand_string')
 	}
 	if os_kind == 'linux' {
@@ -60,7 +60,7 @@ fn (mut a App) collect_info() {
 		if a.cmd(command: '[ "$(awk \'\$5=="/" {print \$1}\' </proc/1/mountinfo)" != "$(awk \'\$5=="/" {print \$1}\' </proc/$$/mountinfo)" ] ; echo \$?') == '0' {
 			os_details += ' (chroot)'
 		}
-	} else if os_kind == 'mac' {
+	} else if os_kind == 'macos' {
 		mut details := []string{}
 		details << a.cmd(command: 'sw_vers -productName')
 		details << a.cmd(command: 'sw_vers -productVersion')
diff --git a/vlib/os/os.v b/vlib/os/os.v
index 93db502168..f3e2c0ec70 100644
--- a/vlib/os/os.v
+++ b/vlib/os/os.v
@@ -792,7 +792,7 @@ pub fn user_os() string {
 		return 'linux'
 	}
 	$if macos {
-		return 'mac'
+		return 'macos'
 	}
 	$if windows {
 		return 'windows'
diff --git a/vlib/v/builder/cc.v b/vlib/v/builder/cc.v
index c52c546135..6d1ddf7a97 100644
--- a/vlib/v/builder/cc.v
+++ b/vlib/v/builder/cc.v
@@ -297,7 +297,7 @@ fn (mut v Builder) cc() {
 		if v.pref.os == .linux || os.user_os() == 'linux' {
 			linker_flags << '-rdynamic'
 		}
-		if v.pref.os == .mac || os.user_os() == 'mac' {
+		if v.pref.os == .macos || os.user_os() == 'macos' {
 			args << '-flat_namespace'
 		}
 	}
@@ -377,16 +377,16 @@ fn (mut v Builder) cc() {
 		verror("'$v.pref.out_name' is a directory")
 	}
 	// macOS code can include objective C  TODO remove once objective C is replaced with C
-	if v.pref.os == .mac || v.pref.os == .ios {
+	if v.pref.os == .macos || v.pref.os == .ios {
 		args << '-x objective-c'
 	}
 	// The C file we are compiling
 	args << '"$v.out_name_c"'
-	if v.pref.os == .mac {
+	if v.pref.os == .macos {
 		args << '-x none'
 	}
 	// Min macos version is mandatory I think?
-	if v.pref.os == .mac {
+	if v.pref.os == .macos {
 		args << '-mmacosx-version-min=10.7'
 	}
 	if v.pref.os == .ios {
@@ -695,7 +695,7 @@ fn (mut c Builder) cc_windows_cross() {
 	obj_name = obj_name.replace('.o.o', '.o')
 	include := '-I $winroot/include '
 	*/
-	if os.user_os() !in ['mac', 'darwin', 'linux'] {
+	if os.user_os() !in ['macos', 'linux'] {
 		println(os.user_os())
 		panic('your platform is not supported yet')
 	}
diff --git a/vlib/v/builder/cflags.v b/vlib/v/builder/cflags.v
index e220ae7d0c..139f75d0e2 100644
--- a/vlib/v/builder/cflags.v
+++ b/vlib/v/builder/cflags.v
@@ -12,7 +12,8 @@ fn (v &Builder) get_os_cflags() []cflag.CFlag {
 	for flag in v.table.cflags {
 		if flag.os == '' ||
 			(flag.os == 'linux' && v.pref.os == .linux) ||
-			(flag.os == 'darwin' && v.pref.os == .mac) ||
+			(flag.os == 'macos' && v.pref.os == .macos) ||
+			(flag.os == 'darwin' && v.pref.os == .macos) ||
 			(flag.os == 'freebsd' && v.pref.os == .freebsd) ||
 			(flag.os == 'windows' && v.pref.os == .windows) ||
 			(flag.os == 'mingw' && v.pref.os == .windows && v.pref.ccompiler != 'msvc') ||
diff --git a/vlib/v/checker/checker.v b/vlib/v/checker/checker.v
index e10b1d2e99..c19442ee8c 100644
--- a/vlib/v/checker/checker.v
+++ b/vlib/v/checker/checker.v
@@ -17,10 +17,8 @@ const (
 )
 
 const (
-	valid_comp_if_os        = ['windows', 'ios', 'mac', 'macos', 'mach', 'darwin', 'hpux', 'gnu',
-		'qnx', 'linux', 'freebsd', 'openbsd', 'netbsd', 'bsd', 'dragonfly', 'android', 'solaris', 'haiku',
-		'linux_or_macos',
-	]
+	valid_comp_if_os        = ['windows', 'ios', 'macos', 'mach', 'darwin', 'hpux', 'gnu', 'qnx',
+		'linux', 'freebsd', 'openbsd', 'netbsd', 'bsd', 'dragonfly', 'android', 'solaris', 'haiku', 'linux_or_macos']
 	valid_comp_if_compilers = ['gcc', 'tinyc', 'clang', 'mingw', 'msvc', 'cplusplus']
 	valid_comp_if_platforms = ['amd64', 'aarch64', 'x64', 'x32', 'little_endian', 'big_endian']
 	valid_comp_if_other     = ['js', 'debug', 'test', 'glibc', 'prealloc', 'no_bounds_checking']
diff --git a/vlib/v/fmt/tests/array_newlines_keep.vv b/vlib/v/fmt/tests/array_newlines_keep.vv
index fbec39a89c..a355ac84cf 100644
--- a/vlib/v/fmt/tests/array_newlines_keep.vv
+++ b/vlib/v/fmt/tests/array_newlines_keep.vv
@@ -6,7 +6,7 @@ fn main() {
 	// Set up flags
 	expected_flags := [
 		make_flag('solaris', '-L', '/opt/local/lib'),
-		make_flag('darwin', '-framework', 'Cocoa'),
+		make_flag('macos', '-framework', 'Cocoa'),
 		make_flag('windows', '-l', 'gdi32'),
 	]
 	x := []int{len: 10, cap: 100, init: 1}
diff --git a/vlib/v/fmt/tests/consts_expected.vv b/vlib/v/fmt/tests/consts_expected.vv
index 453f30b51a..f5cd618101 100644
--- a/vlib/v/fmt/tests/consts_expected.vv
+++ b/vlib/v/fmt/tests/consts_expected.vv
@@ -8,10 +8,10 @@ const (
 	phi                 = 1.618
 	// Euler's constant
 	eulers              = 2.7182
-	supported_platforms = ['windows', 'mac', 'macos', 'darwin', 'linux', 'freebsd', 'openbsd',
-		'netbsd', 'dragonfly', 'android', 'js', 'solaris', 'haiku', 'linux_or_macos']
-	one_line_supported  = ['windows', 'mac', 'macos', 'darwin', 'linux', 'freebsd', 'openbsd',
-		'netbsd', 'dragonfly', 'android', 'js', 'solaris', 'haiku', 'linux_or_macos']
+	supported_platforms = ['windows', 'macos', 'linux', 'freebsd', 'openbsd', 'netbsd', 'dragonfly',
+		'android', 'js', 'solaris', 'haiku', 'linux_or_macos']
+	one_line_supported  = ['windows', 'macos', 'linux', 'freebsd', 'openbsd', 'netbsd', 'dragonfly',
+		'android', 'js', 'solaris', 'haiku', 'linux_or_macos']
 	another_const       = ['a', 'b', 'c', 'd', 'e', 'f']
 	multiline_const     = [
 		'first line',
diff --git a/vlib/v/fmt/tests/consts_input.vv b/vlib/v/fmt/tests/consts_input.vv
index 26f30b8393..4c4c64a115 100644
--- a/vlib/v/fmt/tests/consts_input.vv
+++ b/vlib/v/fmt/tests/consts_input.vv
@@ -8,9 +8,9 @@ pi=3.14
 phi=1.618
 	//Euler's constant
 eulers=2.7182
-supported_platforms = ['windows', 'mac', 'macos', 'darwin', 'linux', 'freebsd', 'openbsd',
+supported_platforms = ['windows', 'macos', 'linux', 'freebsd', 'openbsd',
 		'netbsd', 'dragonfly', 'android', 'js', 'solaris', 'haiku', 'linux_or_macos']
-one_line_supported    = ['windows', 'mac', 'macos', 'darwin', 'linux', 'freebsd', 'openbsd', 'netbsd', 'dragonfly', 'android', 'js', 'solaris', 'haiku', 'linux_or_macos']
+one_line_supported    = ['windows', 'macos', 'linux', 'freebsd', 'openbsd', 'netbsd', 'dragonfly', 'android', 'js', 'solaris', 'haiku', 'linux_or_macos']
 another_const = ['a', 'b'
 		'c', 'd', 'e'
 		'f'
diff --git a/vlib/v/gen/cgen.v b/vlib/v/gen/cgen.v
index f05e4781af..55bb6ae9a4 100644
--- a/vlib/v/gen/cgen.v
+++ b/vlib/v/gen/cgen.v
@@ -4655,9 +4655,6 @@ fn (mut g Gen) comp_if_to_ifdef(name string, is_comptime_optional bool) string {
 		'ios' {
 			return '__TARGET_IOS__'
 		}
-		'mac' {
-			return '__APPLE__'
-		}
 		'macos' {
 			return '__APPLE__'
 		}
diff --git a/vlib/v/gen/profile.v b/vlib/v/gen/profile.v
index 693463ec20..880b375158 100644
--- a/vlib/v/gen/profile.v
+++ b/vlib/v/gen/profile.v
@@ -17,7 +17,7 @@ fn (mut g Gen) profile_fn(fn_decl ast.FnDecl) {
 	if fn_name.starts_with('time.vpc_now') {
 		g.defer_profile_code = ''
 	} else {
-		measure_fn_name := if g.pref.os == .mac { 'time__vpc_now_darwin' } else { 'time__vpc_now' }
+		measure_fn_name := if g.pref.os == .macos { 'time__vpc_now_darwin' } else { 'time__vpc_now' }
 		fn_profile_counter_name := 'vpc_$g.last_fn_c_name'
 		fn_profile_counter_name_calls := '${fn_profile_counter_name}_calls'
 		g.writeln('')
diff --git a/vlib/v/parser/comptime.v b/vlib/v/parser/comptime.v
index 022aa9e867..1173b98c06 100644
--- a/vlib/v/parser/comptime.v
+++ b/vlib/v/parser/comptime.v
@@ -11,7 +11,7 @@ import vweb.tmpl
 
 // #flag darwin -I.
 const (
-	supported_platforms  = ['windows', 'mac', 'macos', 'darwin', 'linux', 'freebsd', 'openbsd',
+	supported_platforms  = ['windows', 'macos', 'darwin', 'linux', 'freebsd', 'openbsd',
 		'netbsd', 'dragonfly', 'android', 'js', 'solaris', 'haiku', 'linux_or_macos']
 	supported_ccompilers = ['tinyc', 'clang', 'mingw', 'msvc', 'gcc']
 )
@@ -148,11 +148,8 @@ fn os_from_string(os string) pref.OS {
 		'ios' {
 			return .ios
 		}
-		'mac' {
-			return .mac
-		}
 		'macos' {
-			return .mac
+			return .macos
 		}
 		'freebsd' {
 			return .freebsd
diff --git a/vlib/v/pref/os.v b/vlib/v/pref/os.v
index 632b004a6d..cf02683ac7 100644
--- a/vlib/v/pref/os.v
+++ b/vlib/v/pref/os.v
@@ -4,9 +4,9 @@
 module pref
 
 pub enum OS {
-	_auto // Reserved so .mac cannot be misunderstood as auto
+	_auto // Reserved so .macos cannot be misunderstood as auto
 	ios
-	mac
+	macos
 	linux
 	windows
 	freebsd
@@ -31,11 +31,8 @@ pub fn os_from_string(os_str string) ?OS {
 		'ios' {
 			return .ios
 		}
-		'mac' {
-			return .mac
-		}
 		'macos' {
-			return .mac
+			return .macos
 		}
 		'freebsd' {
 			return .freebsd
@@ -81,7 +78,7 @@ pub fn (o OS) str() string {
 		.ios {
 			return 'iOS'
 		}
-		.mac {
+		.macos {
 			return 'MacOS'
 		}
 		.linux {
@@ -125,7 +122,7 @@ pub fn get_host_os() OS {
 		return .ios
 	}
 	$if macos {
-		return .mac
+		return .macos
 	}
 	$if windows {
 		return .windows
diff --git a/vlib/v/pref/should_compile.v b/vlib/v/pref/should_compile.v
index 87e4316177..c1ba4c9ba0 100644
--- a/vlib/v/pref/should_compile.v
+++ b/vlib/v/pref/should_compile.v
@@ -48,7 +48,10 @@ pub fn (prefs &Preferences) should_compile_c(file string) bool {
 	if (file.ends_with('_linux.c.v') || file.ends_with('_linux.v')) && prefs.os != .linux {
 		return false
 	}
-	if (file.ends_with('_darwin.c.v') || file.ends_with('_darwin.v')) && prefs.os != .mac {
+	if (file.ends_with('_darwin.c.v') || file.ends_with('_darwin.v')) && prefs.os != .macos {
+		return false
+	}
+	if (file.ends_with('_macos.c.v') || file.ends_with('_macos.v')) && prefs.os != .macos {
 		return false
 	}
 	if file.ends_with('_nix.c.v') && prefs.os == .windows {