diff --git a/bin/generate-zbm b/bin/generate-zbm
index a0a488797..539436298 100755
--- a/bin/generate-zbm
+++ b/bin/generate-zbm
@@ -15,6 +15,7 @@ use File::stat;
 use File::Path qw(make_path remove_tree);
 use File::Glob qw(:globally :nocase);
 use Sort::Versions;
+use bigint qw(hex);
 
 use Pod::Usage qw(pod2usage);
 
@@ -804,9 +805,9 @@ sub createUEFIBundle {
   $status = pop(@output);
   if ( $status eq 0 ) {
     my @sizes = split( /\s+/, @output[ scalar @output - 1 ] );
+
     my $size  = "0x" . $sizes[3];
     my $vma   = "0x" . $sizes[4];
-
     my $sum = hex($size) + hex($vma);
 
     $uki_offset = increaseBundleOffset( $sum, 0, $uki_alignment );