diff --git a/xorriso/make_xorriso_standalone.sh b/xorriso/make_xorriso_standalone.sh
index e35cbcfa..4198149c 100755
--- a/xorriso/make_xorriso_standalone.sh
+++ b/xorriso/make_xorriso_standalone.sh
@@ -150,6 +150,7 @@ goto_dir   "$current_dir"/nglibisofs-develop
 copy_files libisofs/*.[ch] "$lone_dir"/libisofs
 copy_files libisofs/filters/*.[ch] "$lone_dir"/libisofs/filters
 copy_files doc/susp_aaip*.txt "$lone_dir"/doc
+copy_files doc/zisofs_format.txt "$lone_dir"/doc
 copy_files COPYRIGHT "$lone_dir"/libisofs
 
 # To get a common version.h