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-rw-r--r--pc-bios/s390-ccw/bootmap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index 44df7d16af..b46997c0b7 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -213,7 +213,7 @@ static int eckd_get_boot_menu_index(block_number_t s1b_block_nr)
next_block_nr = eckd_block_num(&s1b->seek[i + 1].chs);
}
- if (next_block_nr) {
+ if (next_block_nr && !is_null_block_number(next_block_nr)) {
read_block(next_block_nr, s2_next_blk,
"Cannot read stage2 boot loader");
}