diff --git a/include/metalsvm/fs.h b/include/metalsvm/fs.h
index 03495bda..dfcb9506 100755
--- a/include/metalsvm/fs.h
+++ b/include/metalsvm/fs.h
@@ -44,12 +44,12 @@
 
 /*open flags*/
 
-//#define O_RDONLY 	0
-//#define O_WRONLY 	1
-//#define O_RDWR	2
+#define O_RDONLY 	0
+#define O_WRONLY 	1
+#define O_RDWR		2
 
 #define O_CREAT 	64
-#define O_EXCL 	128
+#define O_EXCL 		128
 //#define O_NOCTTY 	256
 #define O_TRUNC 	512
 #define O_APPEND 	1024