diff --git a/doc/docs.md b/doc/docs.md
index 59e96ab556..6e494c8663 100644
--- a/doc/docs.md
+++ b/doc/docs.md
@@ -1278,7 +1278,7 @@ $if windows {
 $if linux {
     println('Linux')
 }
-$if mac {
+$if macos {
     println('macOS')
 }
 
diff --git a/vlib/crypto/rand/rand_mac.v b/vlib/crypto/rand/rand_darwin.v
similarity index 100%
rename from vlib/crypto/rand/rand_mac.v
rename to vlib/crypto/rand/rand_darwin.v
diff --git a/vlib/os2/os2_test.v b/vlib/os2/os2_test.v
index 41b18839be..de2cedf0a0 100644
--- a/vlib/os2/os2_test.v
+++ b/vlib/os2/os2_test.v
@@ -2,7 +2,7 @@
 
 fn test_open() {
 	/*
-	$if mac {
+	$if macos {
 		f := os2.create('os2.test')
 		f.writeln('hello world!')
 		f.close()
diff --git a/vlib/readline/readline_mac.v b/vlib/readline/readline_darwin.v
similarity index 100%
rename from vlib/readline/readline_mac.v
rename to vlib/readline/readline_darwin.v
diff --git a/vlib/runtime/runtime_mac.v b/vlib/runtime/runtime_darwin.v
similarity index 100%
rename from vlib/runtime/runtime_mac.v
rename to vlib/runtime/runtime_darwin.v
diff --git a/vlib/runtime/runtime_nix.v b/vlib/runtime/runtime_nix.v
index d57824b080..40c07a7983 100644
--- a/vlib/runtime/runtime_nix.v
+++ b/vlib/runtime/runtime_nix.v
@@ -4,7 +4,7 @@ fn nr_cpus_nix() int {
 	$if linux {
 		return int(C.sysconf(C._SC_NPROCESSORS_ONLN))
 	}
-	$if mac {
+	$if macos {
 		return int(C.sysconf(C._SC_NPROCESSORS_ONLN))
 	}
 	return 1