diff --git a/src/certificate.hxx b/src/certificate.hxx
index cfbedd7..598c9b7 100644
--- a/src/certificate.hxx
+++ b/src/certificate.hxx
@@ -21,6 +21,10 @@ class Certificate: public QWidget, protected Ui::Certificate {
     Certificate(QWidget* p): QWidget(p) {
       setupUi(this);
     }
+    void adjust() {
+      _cert->adjustSize();
+      adjustSize();
+    }
     Certificate& certificate(const QSslCertificate& cert) {
       _cert->clear();
       if (!cert.isValid()) return *this;
diff --git a/src/pinentry.hxx b/src/pinentry.hxx
index 06e8ca1..012a918 100644
--- a/src/pinentry.hxx
+++ b/src/pinentry.hxx
@@ -74,7 +74,7 @@ class PinEntry: public QDialog, public Ui::PinEntry {
   protected Q_SLOTS:
     void on__showDetails_toggled(bool s) {
       _cert->setVisible(s);
-      _cert->adjustSize();
+      _cert->adjust();
       adjustSize();
     }
   protected: