diff --git a/C4/Auth_with_cas.pm b/C4/Auth_with_cas.pm
index dd02afc9ae..5becd96fdc 100644
--- a/C4/Auth_with_cas.pm
+++ b/C4/Auth_with_cas.pm
@@ -33,7 +33,7 @@ our (@ISA, @EXPORT_OK);
 BEGIN {
     require Exporter;
     @ISA   = qw(Exporter);
-    @EXPORT_OK = qw(check_api_auth_cas checkpw_cas login_cas logout_cas login_cas_url logout_if_required multilpleAuth getMultipleAuth);
+    @EXPORT_OK = qw(check_api_auth_cas checkpw_cas login_cas logout_cas login_cas_url logout_if_required multipleAuth getMultipleAuth);
 }
 my $defaultcasserver;
 my $casservers;
diff --git a/opac/opac-user.pl b/opac/opac-user.pl
index 3b72d2fb98..6feb144e50 100755
--- a/opac/opac-user.pl
+++ b/opac/opac-user.pl
@@ -57,6 +57,7 @@ my $query = CGI->new;
 
 # CAS single logout handling
 # Will print header and exit
+require C4::Auth_with_cas;
 C4::Context->preference('casAuthentication') and C4::Auth_with_cas::logout_if_required($query);
 
 my ( $template, $borrowernumber, $cookie ) = get_template_and_user(