diff --git a/apps/mpp-gui/lib/MPP/App.pm b/apps/mpp-gui/lib/MPP/App.pm
index e9953ab..3ec1926 100644
--- a/apps/mpp-gui/lib/MPP/App.pm
+++ b/apps/mpp-gui/lib/MPP/App.pm
@@ -1616,6 +1616,9 @@ sub template {
        $params->{'MODULE_INFO'} = $self->module_info();
        $params->{'TEXT'} = $self->langtext();
        $params->{'APP'} = \$self;
+       $params->{INCLUDE} = sub {
+               Text::Template::fill_in_file($template_dir . '/' . $_[0],
+                       DELIMITERS => ['<%', '%>'], HASH => $_[1] || $params) };

        $self->out_params('_PARAMS_', \$params);