diff --git a/recovery/progressslideshowdialog.cpp b/recovery/progressslideshowdialog.cpp
index 4d08c238..3d2fcb7a 100644
--- a/recovery/progressslideshowdialog.cpp
+++ b/recovery/progressslideshowdialog.cpp
@@ -79,6 +79,11 @@ ProgressSlideshowDialog::~ProgressSlideshowDialog()
     delete ui;
 }
 
+void ProgressSlideshowDialog::reject()
+{
+    /* prevent closing. */
+}
+
 void ProgressSlideshowDialog::setLabelText(const QString &text)
 {
     QString txt = text;
diff --git a/recovery/progressslideshowdialog.h b/recovery/progressslideshowdialog.h
index 0ad2d616..75d8d878 100644
--- a/recovery/progressslideshowdialog.h
+++ b/recovery/progressslideshowdialog.h
@@ -36,6 +36,7 @@ public slots:
     void pauseIOaccounting();
     void resumeIOaccounting();
     void changeDrive(const QString &drive);
+    void reject();
 
 protected:
     QString _drive;