diff --git a/fs/ocfs2/move_extents.c b/fs/ocfs2/move_extents.c
index 86f2631e6360..e038c009cdef 100644
--- a/fs/ocfs2/move_extents.c
+++ b/fs/ocfs2/move_extents.c
@@ -1031,6 +1031,12 @@ int ocfs2_ioctl_move_extents(struct file *filp, void __user *argp)
 	if (range.me_threshold > i_size_read(inode))
 		range.me_threshold = i_size_read(inode);
 
+	if (range.me_flags & ~(OCFS2_MOVE_EXT_FL_AUTO_DEFRAG |
+			       OCFS2_MOVE_EXT_FL_PART_DEFRAG)) {
+		status = -EINVAL;
+		goto out_free;
+	}
+
 	if (range.me_flags & OCFS2_MOVE_EXT_FL_AUTO_DEFRAG) {
 		context->auto_defrag = 1;