diff --git a/vlib/os/os_windows.c.v b/vlib/os/os_windows.c.v
index caf8141da1..c7738cdad6 100644
--- a/vlib/os/os_windows.c.v
+++ b/vlib/os/os_windows.c.v
@@ -95,9 +95,9 @@ struct C._utimbuf {
 fn C._utime(&char, voidptr) int
 
 fn init_os_args_wide(argc int, argv &&byte) []string {
-	mut args_ := []string{}
+	mut args_ := []string{len: argc}
 	for i in 0 .. argc {
-		args_ << unsafe { string_from_wide(&u16(argv[i])) }
+		args_[i] = unsafe { string_from_wide(&u16(argv[i])) }
 	}
 	return args_
 }
diff --git a/vlib/v/tests/valgrind/valgrind_test.v b/vlib/v/tests/valgrind/valgrind_test.v
index fcbc1494b1..227df9b332 100644
--- a/vlib/v/tests/valgrind/valgrind_test.v
+++ b/vlib/v/tests/valgrind/valgrind_test.v
@@ -29,7 +29,6 @@ const skip_valgrind_files = [
 	'vlib/v/tests/valgrind/fn_with_return_should_free_local_vars.v',
 	'vlib/v/tests/valgrind/option_simple.v',
 	'vlib/v/tests/valgrind/string_plus_string_plus.v',
-	'vlib/v/tests/valgrind/import_os_and_use_its_constants.v',
 ]
 
 fn vprintln(s string) {