diff --git a/klipper/configdialog.cpp b/klipper/configdialog.cpp
index fd0b5f4a7..b7a66c55b 100644
--- a/klipper/configdialog.cpp
+++ b/klipper/configdialog.cpp
@@ -378,6 +378,7 @@ AdvancedWidget::AdvancedWidget( QWidget *parent )
     : QWidget(parent)
 {
     QVBoxLayout *mainLayout = new QVBoxLayout(this);
+    mainLayout->setMargin(0);
 
     QGroupBox *groupBox = new QGroupBox(i18n("D&isable Actions for Windows of Type WM_CLASS"), this);
     groupBox->setLayout(new QVBoxLayout(groupBox));