diff --git a/krusader/DiskUsage/diskusagegui.h b/krusader/DiskUsage/diskusagegui.h
--- a/krusader/DiskUsage/diskusagegui.h
+++ b/krusader/DiskUsage/diskusagegui.h
@@ -69,7 +69,7 @@
     }
 
 protected slots:
-    virtual void               reject() Q_DECL_OVERRIDE;
+    virtual void               closeEvent(QCloseEvent *event) Q_DECL_OVERRIDE;
     void                       slotViewChanged(int view);
     void                       enableButtons(bool);
     void                       slotLoadFinished(bool);
diff --git a/krusader/DiskUsage/diskusagegui.cpp b/krusader/DiskUsage/diskusagegui.cpp
--- a/krusader/DiskUsage/diskusagegui.cpp
+++ b/krusader/DiskUsage/diskusagegui.cpp
@@ -126,7 +126,7 @@
     QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Close);
     mainLayout->addWidget(buttonBox);
 
-    connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));
+    connect(buttonBox, SIGNAL(rejected()), this, SLOT(close()));
     connect(diskUsage, SIGNAL(status(QString)), this, SLOT(setStatus(QString)));
     connect(diskUsage, SIGNAL(viewChanged(int)), this, SLOT(slotViewChanged(int)));
     connect(diskUsage, SIGNAL(newSearch()), this,  SLOT(newSearch()));
@@ -154,7 +154,7 @@
     else
         show();
 
-    exec();
+    show();
 }
 
 DiskUsageGUI::~DiskUsageGUI()
@@ -188,7 +188,7 @@
     QDialog::resizeEvent(e);
 }
 
-void DiskUsageGUI::reject()
+void DiskUsageGUI::closeEvent(QCloseEvent *event)
 {
     KConfigGroup group(krConfig, "DiskUsage");
     group.writeEntry("Window Width", sizeX);
@@ -196,7 +196,7 @@
     group.writeEntry("Window Maximized", isMaximized());
     group.writeEntry("View", diskUsage->getActiveView());
 
-    QDialog::reject();
+    event->accept();
 }
 
 void DiskUsageGUI::loadUsageInfo()
diff --git a/krusader/krslots.cpp b/krusader/krslots.cpp
--- a/krusader/krslots.cpp
+++ b/krusader/krslots.cpp
@@ -685,7 +685,7 @@
 
 void KRslots::slotDiskUsage()
 {
-    DiskUsageGUI du(ACTIVE_PANEL->virtualPath(), MAIN_VIEW);
+    new DiskUsageGUI(ACTIVE_PANEL->virtualPath(), 0);
 }
 
 void KRslots::applicationStateChanged()