diff --git a/cpukit/libfs/src/jffs2/src/jffs2_fs_sb.h b/cpukit/libfs/src/jffs2/src/jffs2_fs_sb.h
index 778275f48a..5a7091746f 100644
--- a/cpukit/libfs/src/jffs2/src/jffs2_fs_sb.h
+++ b/cpukit/libfs/src/jffs2/src/jffs2_fs_sb.h
@@ -38,6 +38,7 @@ struct jffs2_mount_opts {
 	 * users. This is implemented simply by means of not allowing the
 	 * latter users to write to the file system if the amount if the
 	 * available space is less then 'rp_size'. */
+	bool set_rp_size;
 	unsigned int rp_size;
 };