diff --git a/authorities/authorities.pl b/authorities/authorities.pl
index e016da793d..fa595114ef 100755
--- a/authorities/authorities.pl
+++ b/authorities/authorities.pl
@@ -21,6 +21,7 @@
 use Modern::Perl;
 
 use CGI qw ( -utf8 );
+use POSIX;
 use C4::Auth qw( get_template_and_user );
 use C4::Output qw( output_html_with_http_headers );
 use C4::AuthoritiesMarc qw( AddAuthority ModAuthority GetAuthority GetTagsLabels GetAuthMARCFromKohaField FindDuplicateAuthority );
diff --git a/cataloguing/addbiblio.pl b/cataloguing/addbiblio.pl
index bd6b9dc3d9..edd8e77a5e 100755
--- a/cataloguing/addbiblio.pl
+++ b/cataloguing/addbiblio.pl
@@ -22,6 +22,7 @@
 use Modern::Perl;
 
 use CGI;
+use POSIX;
 use C4::Output qw( output_html_with_http_headers );
 use C4::Auth qw( get_template_and_user haspermission );
 use C4::Biblio qw(