diff --git a/libisofs/image.c b/libisofs/image.c
index 30f5f26..5e99701 100644
--- a/libisofs/image.c
+++ b/libisofs/image.c
@@ -146,13 +146,7 @@ void iso_image_unref(IsoImage *image)
         iso_image_give_up_mips_boot(image, 0);
         if (image->sparc_core_node != NULL)
             iso_node_unref((IsoNode *) image->sparc_core_node);
-
-#ifdef Libisofs_enable_unreleased_hppa_palO
-
         iso_image_set_hppa_palo(image, NULL, NULL, NULL, NULL, NULL, 1);
-
-#endif
-
         free(image->volset_id);
         free(image->volume_id);
         free(image->publisher_id);
diff --git a/libisofs/libisofs.h b/libisofs/libisofs.h
index 1c1a7b8..f51dde5 100644
--- a/libisofs/libisofs.h
+++ b/libisofs/libisofs.h
@@ -2136,15 +2136,6 @@ int iso_write_opts_set_overwrite_buf(IsoWriteOpts *opts, uint8_t *overwrite);
  */
 int iso_write_opts_set_fifo_size(IsoWriteOpts *opts, size_t fifo_size);
 
-/*
- * Release 1.3.6 contains an incomplete implementation of preparations for the
- * HP-PA bootloader PALO. Its header version 5 is not completely defined yet.
- * To enable the code for these preparations, you have to define the macro
- *   Libisofs_enable_unreleased_hppa_palO
- * and to insert into libisofs/libisofs.ver the lines
- *   iso_image_set_hppa_palo;
- *   iso_image_get_hppa_palo;
- */
 /*
  * Attach 32 kB of binary data which shall get written to the first 32 kB 
  * of the ISO image, the ECMA-119 System Area. This space is intended for
@@ -2195,13 +2186,11 @@ int iso_write_opts_set_fifo_size(IsoWriteOpts *opts, size_t fifo_size);
  *                 This will overwrite the first 512 bytes of the submitted
  *                 data.
  *              4= HP-PA PALO boot sector version 4 for HP PA-RISC
- *                 <<< only ifdef Libisofs_enable_unreleased_hppa_palO
  *                 @since 1.3.8
  *                 Suitable for older PALO of e.g. Debian 4 and 5. 
  *                 Submit all five parameters of iso_image_set_hppa_palo():
  *                   cmdline, bootloader, kernel_32, kernel_64, ramdisk
  *              5= HP-PA PALO boot sector version 5 for HP PA-RISC
- *                 <<< only ifdef Libisofs_enable_unreleased_hppa_palO
  *                 @since 1.3.8
  *                 Suitable for newer PALO, where PALOHDRVERSION in
  *                 lib/common.h is defined as 5.
@@ -3757,13 +3746,6 @@ int iso_image_set_sparc_core(IsoImage *img, IsoFile *sparc_core, int flag);
  */
 int iso_image_get_sparc_core(IsoImage *img, IsoFile **sparc_core, int flag);
 
-
-#ifdef Libisofs_enable_unreleased_hppa_palO
-
-/* <<< This API call and the implementation of its consequences are not yet
-       stable. So it gets excluded from releases.
-*/
-
 /**
  * Define a command line and submit the paths of four mandatory files for
  * production of a HP-PA PALO boot sector for PA-RISC machines.
@@ -3819,8 +3801,6 @@ int iso_image_set_hppa_palo(IsoImage *img, char *cmdline, char *bootloader,
 int iso_image_get_hppa_palo(IsoImage *img, char **cmdline, char **bootloader,
                             char **kernel_32, char **kernel_64, char **ramdisk);
 
-#endif /* Libisofs_enable_unreleased_hppa_palO */
-
 /**
  * Increments the reference counting of the given node.
  *
diff --git a/libisofs/libisofs.ver b/libisofs/libisofs.ver
index b4f605f..c0df07d 100644
--- a/libisofs/libisofs.ver
+++ b/libisofs/libisofs.ver
@@ -97,6 +97,7 @@ iso_image_get_bootcat;
 iso_image_get_boot_image;
 iso_image_get_copyright_file_id;
 iso_image_get_data_preparer_id;
+iso_image_get_hppa_palo;
 iso_image_get_mips_boot_files;
 iso_image_get_msg_id;
 iso_image_get_publisher_id;
@@ -124,6 +125,7 @@ iso_image_set_boot_catalog_weight;
 iso_image_set_boot_image;
 iso_image_set_copyright_file_id;
 iso_image_set_data_preparer_id;
+iso_image_set_hppa_palo;
 iso_image_set_ignore_aclea;
 iso_image_set_publisher_id;
 iso_image_set_sparc_core;
diff --git a/libisofs/system_area.c b/libisofs/system_area.c
index 38e7642..badd741 100644
--- a/libisofs/system_area.c
+++ b/libisofs/system_area.c
@@ -887,8 +887,6 @@ static int make_hppa_palo_sector(Ecma119Image *t, uint8_t *buf, int hdrversion,
     iso_msb(buf + 240, adr, 4);
     iso_msb(buf + 244, len, 4);
 
-    /* >>> ??? iso_msb(buf + 248, ipl_entry, 4); */
-
     if (hdrversion == 5) {
         if (strlen(img->hppa_cmdline) > 1023) {
             iso_msg_submit(img->id, ISO_HPPA_PALO_CMDLEN, 0,