diff --git a/plugins/messageviewer/bodypartformatter/pkpass/pkpass_plugin.cpp b/plugins/messageviewer/bodypartformatter/pkpass/pkpass_plugin.cpp
index 02a07d4b..34a7e6f2 100644
--- a/plugins/messageviewer/bodypartformatter/pkpass/pkpass_plugin.cpp
+++ b/plugins/messageviewer/bodypartformatter/pkpass/pkpass_plugin.cpp
@@ -1,181 +1,184 @@
 /*
    Copyright (c) 2017 Volker Krause <vkrause@kde.org>
 
    This library is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public License as published by
    the Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.
 
    This library is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
    License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to the
    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
 */
 
 #include <MessageViewer/MessagePartRendererBase>
 #include <MessageViewer/MessagePartRendererManager>
 #include <MessageViewer/MessagePartRenderPlugin>
 
 #include <MessageViewer/HtmlWriter>
 #include <MimeTreeParser/MessagePart>
 
 #include <KPkPass/BoardingPass>
 #include <KPkPass/Barcode>
 
 #include <grantlee/metatype.h>
 #include <grantlee/template.h>
 
 #include <prison/Prison>
 
 #include <QGuiApplication>
 #include <QUrl>
 #include <QImage>
 #include <QMetaProperty>
 
 static bool isPkPassContent(KMime::Content *content)
 {
     const auto ct = content->contentType(false);
     if (ct && ct->mimeType() == "application/vnd.apple.pkpass") {
         return true;
     }
     if (ct && ct->mimeType() != "application/octet-stream" && ct->mimeType() != "application/zip") {
         return false;
     }
     if (ct && ct->name().endsWith(QLatin1String("pkpass"))) {
         return true;
     }
     const auto cd = content->contentDisposition(false);
     return cd && cd->filename().endsWith(QLatin1String("pkpass"));
 }
 
 // Grantlee has no Q_GADGET support yet
 #define GRANTLEE_MAKE_GADGET(Class) \
     GRANTLEE_BEGIN_LOOKUP(Class) \
     const auto idx = Class::staticMetaObject.indexOfProperty(property.toUtf8().constData()); \
     if (idx < 0) { \
         return {}; \
     } \
     const auto mp = Class::staticMetaObject.property(idx); \
     return mp.readOnGadget(&object); \
     GRANTLEE_END_LOOKUP
 
 GRANTLEE_MAKE_GADGET(KPkPass::Barcode)
 GRANTLEE_MAKE_GADGET(KPkPass::Field)
 
 namespace {
 class Formatter : public MessageViewer::MessagePartRendererBase
 {
 public:
     bool render(const MimeTreeParser::MessagePartPtr &msgPart, MessageViewer::HtmlWriter *htmlWriter, MessageViewer::RenderContext *context) const override
     {
         Q_UNUSED(context);
         auto mp = msgPart.dynamicCast<MimeTreeParser::AttachmentMessagePart>();
         if (!mp || context->isHiddenHint(msgPart) || !msgPart->content() || !isPkPassContent(msgPart->content())) {
             return false;
         }
 
         std::unique_ptr<KPkPass::Pass> pass(KPkPass::Pass::fromData(msgPart->content()->decodedContent()));
         const auto dir = mp->nodeHelper()->createTempDir(QStringLiteral("pkpass"));
         const auto logo = pass->logo();
         if (!logo.isNull()) {
             const QString fileName = dir + QStringLiteral("/logo.png");
             logo.save(fileName);
             pass->setProperty("logoUrl", QUrl::fromLocalFile(fileName));
             mp->nodeHelper()->addTempFile(fileName);
         }
         const auto strip = pass->strip();
         if (!strip.isNull()) {
             const QString fileName = dir + QStringLiteral("/strip.png");
             strip.save(fileName);
             pass->setProperty("stripUrl", QUrl::fromLocalFile(fileName));
             mp->nodeHelper()->addTempFile(fileName);
         }
         const auto background = pass->background();
         if (!background.isNull()) {
             const QString fileName = dir + QStringLiteral("/background.png");
             background.save(fileName);
             pass->setProperty("backgroundUrl", QUrl::fromLocalFile(fileName));
             mp->nodeHelper()->addTempFile(fileName);
         }
         const auto footer = pass->footer();
         if (!footer.isNull()) {
             const QString fileName = dir + QStringLiteral("/footer.png");
             footer.save(fileName);
             pass->setProperty("footerUrl", QUrl::fromLocalFile(fileName));
             mp->nodeHelper()->addTempFile(fileName);
         }
 
         const auto barcodes = pass->barcodes();
         if (!barcodes.isEmpty()) {
             const auto barcode = barcodes.at(0);
             std::unique_ptr<Prison::AbstractBarcode> code;
             switch (barcode.format()) {
             case KPkPass::Barcode::QR:
                 code.reset(Prison::createBarcode(Prison::QRCode));
                 break;
             case KPkPass::Barcode::Aztec:
                 code.reset(Prison::createBarcode(Prison::Aztec));
                 break;
             default:
                 break;
             }
 
             if (code) {
                 code->setData(barcode.message());
 
                 const QString fileName = dir + QStringLiteral("/barcode.png");
                 code->toImage(code->preferredSize(qGuiApp->devicePixelRatio())).save(fileName);
 
                 pass->setProperty("barcodeUrl", QUrl::fromLocalFile(fileName));
                 mp->nodeHelper()->addTempFile(fileName);
             }
         }
 
         // Grantlee can't handle QColor...
         pass->setProperty("foregroundColorName", pass->foregroundColor().name());
         pass->setProperty("backgroundColorName", pass->backgroundColor().name());
         pass->setProperty("labelColorName", pass->labelColor().name());
 
         auto c = MessageViewer::MessagePartRendererManager::self()->createContext();
         c.insert(QStringLiteral("block"), mp.data());
         c.insert(QStringLiteral("pass"), pass.get());
 
         Grantlee::Template t;
         if (qobject_cast<KPkPass::BoardingPass *>(pass.get())) {
             t = MessageViewer::MessagePartRendererManager::self()->loadByName(QStringLiteral("org.kde.messageviewer/pkpass/boardingpass.html"));
         } else if (pass->type() == KPkPass::Pass::EventTicket) {
             t = MessageViewer::MessagePartRendererManager::self()->loadByName(QStringLiteral("org.kde.messageviewer/pkpass/eventticket.html"));
+        } else {
+            // unknown pass type we have no template for
+            return false;
         }
 
         Grantlee::OutputStream s(htmlWriter->stream());
         t->render(&s, &c);
         return true;
     }
 };
 
 class Plugin : public QObject, public MessageViewer::MessagePartRenderPlugin
 {
     Q_OBJECT
     Q_INTERFACES(MessageViewer::MessagePartRenderPlugin)
     Q_PLUGIN_METADATA(IID "com.kde.messageviewer.bodypartformatter" FILE "pkpass_plugin.json")
 public:
     explicit Plugin(QObject *parent = nullptr)
         : QObject(parent)
     {
         Grantlee::registerMetaType<KPkPass::Barcode>();
         Grantlee::registerMetaType<KPkPass::Field>();
     }
 
     MessageViewer::MessagePartRendererBase *renderer(int index) override
     {
         return index == 0 ? new Formatter() : nullptr;
     }
 };
 }
 
 #include "pkpass_plugin.moc"