---
 vfs/vfs-impl.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/vfs/vfs-impl.h
+++ b/vfs/vfs-impl.h
@@ -2,6 +2,7 @@
 #define MC_VFS_IMPL_H
 
 #ifdef USE_VFS
+#include <stddef.h>
 
 typedef void *vfsid;
 struct vfs_stamping;
@@ -85,7 +86,7 @@ struct vfs_class {
  */
 union vfs_dirent {
     struct dirent dent;
-    char _extra_buffer[((int) &((struct dirent *) 0)->d_name) +
+    char _extra_buffer[offsetof(struct dirent, d_name) +
 		       MC_MAXPATHLEN + 1];
 };