diff --git a/src/dialogs/certificatedumpwidget.cpp b/src/dialogs/certificatedumpwidget.cpp
index 45e91bd79..f22b939a9 100644
--- a/src/dialogs/certificatedumpwidget.cpp
+++ b/src/dialogs/certificatedumpwidget.cpp
@@ -1,76 +1,77 @@
 // SPDX-FileCopyrightText: 2024 g10 Code GmbH
 // SPDX-FileContributor: Tobias Fella <tobias.fella@gnupg.com>
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 #include <config-kleopatra.h>
 
 #include "certificatedumpwidget.h"
 
 #include "commands/dumpcertificatecommand.h"
 
 #include <kleopatra_debug.h>
 
 #include <Libkleo/GnuPG>
 
 #include <gpgme++/context.h>
 #include <gpgme++/key.h>
 
 #include <KLocalizedString>
 
 #include <QTextEdit>
 #include <QVBoxLayout>
 
 class CertificateDumpWidget::Private
 {
     CertificateDumpWidget *const q;
 
 public:
     Private(CertificateDumpWidget *qq)
         : q{qq}
         , ui{qq}
     {
     }
 
     GpgME::Key key;
     struct UI {
         QVBoxLayout *mainLayout;
         QTextEdit *textEdit;
 
         UI(QWidget *widget)
         {
             mainLayout = new QVBoxLayout{widget};
             mainLayout->setContentsMargins({});
             mainLayout->setSpacing(0);
 
             textEdit = new QTextEdit(widget);
             textEdit->setReadOnly(true);
+            textEdit->setFontFamily(QStringLiteral("monospace"));
             mainLayout->addWidget(textEdit);
         }
     } ui;
 };
 
 CertificateDumpWidget::CertificateDumpWidget(QWidget *parent)
     : QWidget(parent)
     , d(new Private(this))
 {
 }
 
 CertificateDumpWidget::~CertificateDumpWidget() = default;
 
 void CertificateDumpWidget::setKey(const GpgME::Key &key)
 {
     d->key = key;
     auto command = new Kleo::Commands::DumpCertificateCommand(key);
     command->setUseDialog(false);
     connect(command, &Kleo::Command::finished, this, [command, this]() {
         d->ui.textEdit->setText(command->output().join(u'\n'));
     });
     command->start();
 }
 
 GpgME::Key CertificateDumpWidget::key() const
 {
     return d->key;
 }
 
 #include "moc_certificatedumpwidget.cpp"