diff --git a/doublestar.go b/doublestar.go
index 3e5bbf7..aacff06 100644
--- a/doublestar.go
+++ b/doublestar.go
@@ -305,7 +305,7 @@
 			return nil, ErrBadPattern
 		}
 		for _, o := range options {
-			m, e := Glob(o + pattern[endOptions+1:])
+			m, e := GlobOS(vos, o+pattern[endOptions+1:])
 			if e != nil {
 				return nil, e
 			}