diff --git a/misc-scripts/assembly/mapping_stats.pl b/misc-scripts/assembly/mapping_stats.pl
index 0493fabbf0a6c8b16e88cd81fc0c576902208d43..65a796b8cb58aaba354664cff66ac54b5ef63fc6 100755
--- a/misc-scripts/assembly/mapping_stats.pl
+++ b/misc-scripts/assembly/mapping_stats.pl
@@ -78,6 +78,7 @@ $support->parse_extra_options(
     'altassembly=s',
     'althost=s',
     'altport=n',
+    'altpass=s',
     'chromosomes|chr=s@',
 );
 $support->allowed_params(
@@ -88,6 +89,7 @@ $support->allowed_params(
     'althost',
     'altport',
     'chromosomes',
+    'altpass',
 );
 
 if ($support->param('help') or $support->error) {