diff --git a/cmd/tools/vfmt.v b/cmd/tools/vfmt.v
index 362ca967809c96..fe4706a484408f 100644
--- a/cmd/tools/vfmt.v
+++ b/cmd/tools/vfmt.v
@@ -183,7 +183,8 @@ fn (foptions &FormatOptions) vlog(msg string) {
 
 fn parse_others_in_same_module(mod_name string, file string, mut table ast.Table, prefs &pref.Preferences) {
 	if mod_name != 'main' && prefs.should_compile_c(file) && !file.ends_with('.c.v')
-		&& !file.starts_with('.#') && !file.contains('_d_') && !file.contains('_notd_') {
+		&& !file.ends_with('_windows.v') && !file.starts_with('.#') && !file.contains('_d_')
+		&& !file.contains('_notd_') {
 		// other files in the same module also need to be parsed
 		cur_file_dir := os.dir(file)
 		mut files := os.ls(cur_file_dir) or { panic(err) }
diff --git a/vlib/os/filepath_windows.v b/vlib/os/filepath_windows.v
index 75c9723c7e402e..776c8f3bcbdfff 100644
--- a/vlib/os/filepath_windows.v
+++ b/vlib/os/filepath_windows.v
@@ -11,7 +11,7 @@ module os
 pub fn windows_volume(path string) string {
 	volume_len := win_volume_len(path)
 	if volume_len == 0 {
-		return os.empty_str
+		return empty_str
 	}
 	return path[..volume_len]
 }
diff --git a/vlib/v/fmt/fmt_keep_test.v b/vlib/v/fmt/fmt_keep_test.v
index 53dcdd30786ac9..1d9fa5e5aba0a8 100644
--- a/vlib/v/fmt/fmt_keep_test.v
+++ b/vlib/v/fmt/fmt_keep_test.v
@@ -61,7 +61,8 @@ fn run_fmt(mut input_files []string) {
 
 fn parse_others_in_same_module(mod_name string, file string, mut table ast.Table, prefs &pref.Preferences) {
 	if mod_name != 'main' && prefs.should_compile_c(file) && !file.ends_with('.c.v')
-		&& !file.starts_with('.#') && !file.contains('_d_') && !file.contains('_notd_') {
+		&& !file.ends_with('_windows.v') && !file.starts_with('.#') && !file.contains('_d_')
+		&& !file.contains('_notd_') {
 		// other files in the same module also need to be parsed
 		cur_file_dir := os.dir(file)
 		mut files := os.ls(cur_file_dir) or { panic(err) }