diff --git a/mkbootimg/OLVASSEL.md b/mkbootimg/OLVASSEL.md
index 30aefee..266077a 100644
--- a/mkbootimg/OLVASSEL.md
+++ b/mkbootimg/OLVASSEL.md
@@ -19,7 +19,7 @@ fájlrendszerek:
 | `fat`    | ✗No    | ✔Yes     | [spec](https://gitlab.com/bztsrc/bootboot/raw/binaries/specs/vfat.pdf) (csak nem-ESP, LFN-el) |
 | `minix`  | ✗No    | ✔Yes     | [V2 spec](https://gitlab.com/bztsrc/bootboot/raw/binaries/specs/minix.pdf), [V3 forrás](https://github.com/Stichting-MINIX-Research-Foundation/minix/tree/master/minix/fs/mfs) (V3 támogatott, de csak V2-höz van spec) |
 | `ext2`   | ✗No    | ✔Yes     | [spec](https://gitlab.com/bztsrc/bootboot/raw/binaries/specs/ext2.pdf), [dokumentáció](https://www.nongnu.org/ext2-doc/ext2.html) |
-| `lean`   | ✗No    | ✔Yes     | [honlap](https://freedos-32.sourceforge.net/lean/specification.php) |
+| `lean`   | ✗No    | ✔Yes     | [honlap](http://freedos-32.sourceforge.net/lean/specification.php) |
 
 A kód úgy lett megírva, hogy könnyű legyen bővíteni.
 
diff --git a/mkbootimg/README.md b/mkbootimg/README.md
index e89ffdd..221c0f7 100644
--- a/mkbootimg/README.md
+++ b/mkbootimg/README.md
@@ -18,7 +18,7 @@ also creates an initrd or a disk partition from a directory. Supported file syst
 | `fat`    | ✗No    | ✔Yes      | [spec](https://gitlab.com/bztsrc/bootboot/raw/binaries/specs/vfat.pdf) (non-ESP only, with LFN) |
 | `minix`  | ✗No    | ✔Yes      | [V2 spec](https://gitlab.com/bztsrc/bootboot/raw/binaries/specs/minix.pdf), [V3 source](https://github.com/Stichting-MINIX-Research-Foundation/minix/tree/master/minix/fs/mfs) (V3 supported, but there's only V2 spec) |
 | `ext2`   | ✗No    | ✔Yes      | [spec](https://gitlab.com/bztsrc/bootboot/raw/binaries/specs/ext2.pdf), [documentation](https://www.nongnu.org/ext2-doc/ext2.html) |
-| `lean`   | ✗No    | ✔Yes      | [homepage](https://freedos-32.sourceforge.net/lean/specification.php) |
+| `lean`   | ✗No    | ✔Yes      | [homepage](http://freedos-32.sourceforge.net/lean/specification.php) |
 
 The code is written in a way that it is easily expandable.
 
diff --git a/mkbootimg/lean.c b/mkbootimg/lean.c
index 8266470..caa1137 100644
--- a/mkbootimg/lean.c
+++ b/mkbootimg/lean.c
@@ -25,7 +25,7 @@
  *
  * This file is part of the BOOTBOOT Protocol package.
  * @brief LeanFS file system driver
- * https://freedos-32.sourceforge.net/lean/specification.php
+ * See http://freedos-32.sourceforge.net/lean/specification.php
  *
  */
 #include "main.h"