diff --git a/libkcups/KCupsConnection.cpp b/libkcups/KCupsConnection.cpp
--- a/libkcups/KCupsConnection.cpp
+++ b/libkcups/KCupsConnection.cpp
@@ -858,7 +858,6 @@
 
 const char * password_cb(const char *prompt, http_t *http, const char *method, const char *resource, void *user_data)
 {
-    Q_UNUSED(prompt)
     Q_UNUSED(http)
     Q_UNUSED(method)
     Q_UNUSED(resource)
@@ -872,6 +871,9 @@
     auto passwordDialog = static_cast<KCupsPasswordDialog *>(user_data);
     bool wrongPassword = password_retries > 1;
 
+    // use prompt text from CUPS callback for dialog
+    passwordDialog->setPromptText(i18n("A CUPS connection requires authentication: \"") + QString::fromUtf8(prompt) + QStringLiteral("\""));
+
     // This will block this thread until exec is not finished
     qCDebug(LIBKCUPS) << password_retries;
     QMetaObject::invokeMethod(passwordDialog,
diff --git a/libkcups/KCupsPasswordDialog.h b/libkcups/KCupsPasswordDialog.h
--- a/libkcups/KCupsPasswordDialog.h
+++ b/libkcups/KCupsPasswordDialog.h
@@ -30,6 +30,7 @@
 public:
     explicit KCupsPasswordDialog(QObject *parent = nullptr);
     void setMainWindow(WId mainwindow);
+    void setPromptText(const QString &promptText);
 
 public slots:
     void exec(const QString &username, bool wrongPassword);
@@ -43,6 +44,7 @@
     WId m_mainwindow;
     QString m_username;
     QString m_password;
+    QString m_promptText;
 };
 
 #endif // KCUPSPASSWORDDIALOG_H
diff --git a/libkcups/KCupsPasswordDialog.cpp b/libkcups/KCupsPasswordDialog.cpp
--- a/libkcups/KCupsPasswordDialog.cpp
+++ b/libkcups/KCupsPasswordDialog.cpp
@@ -31,19 +31,26 @@
 KCupsPasswordDialog::KCupsPasswordDialog(QObject *parent) :
     QObject(parent),
     m_accepted(false),
-    m_mainwindow(0)
+    m_mainwindow(0),
+    // default text, can be overriden using setPromptText()
+    m_promptText(i18n("Enter an username and a password to complete the task"))
 {
 }
 
 void KCupsPasswordDialog::setMainWindow(WId mainwindow)
 {
     m_mainwindow = mainwindow;
 }
 
+void KCupsPasswordDialog::setPromptText(const QString &text)
+{
+    m_promptText = text;
+}
+
 void KCupsPasswordDialog::exec(const QString &username, bool wrongPassword)
 {
     QPointer<KPasswordDialog> dialog = new KPasswordDialog(nullptr, KPasswordDialog::ShowUsernameLine);
-    dialog->setPrompt(i18n("Enter an username and a password to complete the task"));
+    dialog->setPrompt(m_promptText);
     dialog->setModal(false);
     dialog->setUsername(username);
     if (wrongPassword) {