diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 667096acd..a02fb4e33 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2005-02-23  Corinna Vinschen  <corinna@vinschen.de>
+
+	* include/sys/statvfs.h (ST_RDONLY): Define.
+	(ST_NOSUID): Define.
+
 2005-02-23  Corinna Vinschen  <corinna@vinschen.de>
 
 	* cygwin.din (fstatvfs): Export.
diff --git a/winsup/cygwin/include/sys/statvfs.h b/winsup/cygwin/include/sys/statvfs.h
index a32c19866..aa86674af 100644
--- a/winsup/cygwin/include/sys/statvfs.h
+++ b/winsup/cygwin/include/sys/statvfs.h
@@ -13,6 +13,9 @@ details. */
 
 #include <sys/types.h>
 
+#define ST_RDONLY 0x80000	/* equals FILE_READ_ONLY_VOLUME */
+#define ST_NOSUID 0		/* Looking for that bit should always fail. */
+
 struct statvfs {
    unsigned long    f_bsize;    /* file system block size */
    unsigned long    f_frsize;   /* fragment size */