diff --git a/pack.inc.php b/pack.inc.php
index a8035ab..f93cc3b 100644
--- a/pack.inc.php
+++ b/pack.inc.php
@@ -312,6 +312,7 @@ function config_pack_and_write_bundle(
   int $version,
   bool $use_lz4 = true, 
   int $binary_format = 1, 
+  bool $debug = false
 )
 {
   $cache_entries = array();
@@ -336,7 +337,8 @@ function config_pack_and_write_bundle(
       cache_entries: $cache_entries, 
       use_lz4: $use_lz4, 
       binary_format: $binary_format, 
-      version: $version
+      version: $version,
+      debug: $debug
     )
   );