diff --git a/bootboot.bin b/bootboot.bin
index 91aa6a8..d5124d1 100644
Binary files a/bootboot.bin and b/bootboot.bin differ
diff --git a/x86_64-bios/tinf.inc b/x86_64-bios/tinf.inc
index f2d16bf..fc22bef 100644
--- a/x86_64-bios/tinf.inc
+++ b/x86_64-bios/tinf.inc
@@ -28,14 +28,14 @@
 ;*
 
 ;IN:
-; esi: gzipped initrd
+; esi: gzipped initrd (without gzip header)
 ; edi: output buffer (guaranteed to be big enough)
 ; ecx: output buffer size
 tinf_uncompress:
             push        ecx
             push        edi
             mov         edi, tinf_bss_start
-            mov         ecx, tinf_bss_end-tinf_bss_start
+            mov         ecx, tinf_bss_end-tinf_bss_start+1
             xor         al, al
             repnz       stosb
             pop         edi