diff --git a/libsel4debug/src/bootinfo.c b/libsel4debug/src/bootinfo.c
index dacacdb29..60e8f7518 100644
--- a/libsel4debug/src/bootinfo.c
+++ b/libsel4debug/src/bootinfo.c
@@ -74,7 +74,7 @@ void debug_print_bootinfo(seL4_BootInfo *info)
     printf("extra boot info blobs:\n");
     seL4_Word offs = 0;
     while (offs < info->extraLen) {
-        seL4_BootInfoHeader *h = (seL4_BootInfoHeader *)((seL4_Word)info + 4096 + offs);
+        seL4_BootInfoHeader *h = (seL4_BootInfoHeader *)((seL4_Word)info + SEL4_BI_FRAME_SIZE + offs);
         printf("    type: %"SEL4_PRIu_word", offset: %"SEL4_PRIu_word", len: %"SEL4_PRIu_word"\n",
                h->id, offs, h->len);
         offs += h->len;