diff --git a/vlib/os/os.v b/vlib/os/os.v
index ff3b409ca7..90ec31e344 100644
--- a/vlib/os/os.v
+++ b/vlib/os/os.v
@@ -20,17 +20,17 @@ struct dirent {
 } 
 */ 
 
+struct C.dirent {
+	d_name byteptr 
+} 
+
+fn C.readdir(voidptr) C.dirent 
+
 const (
 	args = []string
 	MAX_PATH = 4096
 )
 
-// Windows 
-import const (
-	FILE_ATTRIBUTE_DIRECTORY
-	INVALID_FILE_ATTRIBUTES
-)
-
 struct C.FILE {
 	
 }
@@ -418,10 +418,10 @@ pub fn dir_exists(path string) bool {
 	$if windows {
 		_path := path.replace('/', '\\')
 		attr := int(C.GetFileAttributes(_path.to_wide()))
-		if attr == INVALID_FILE_ATTRIBUTES {
+		if attr == C.INVALID_FILE_ATTRIBUTES {
 			return false
 		}
-		if (attr & FILE_ATTRIBUTE_DIRECTORY) != 0 {
+		if (attr & C.FILE_ATTRIBUTE_DIRECTORY) != 0 {
 			return true
 		}
 		return false
diff --git a/vlib/os/os_nix.v b/vlib/os/os_nix.v
index 52f1cf5853..6eac20da2b 100644
--- a/vlib/os/os_nix.v
+++ b/vlib/os/os_nix.v
@@ -7,12 +7,6 @@ const (
 	PathSeparator = '/' 
 )
 
-struct C.dirent {
-	d_name byteptr 
-} 
-
-fn C.readdir(voidptr) C.dirent 
-
 
 // get_error_msg return error code representation in string.
 pub fn get_error_msg(code int) string {