diff --git a/src/kassistantdialog.cpp b/src/kassistantdialog.cpp
--- a/src/kassistantdialog.cpp
+++ b/src/kassistantdialog.cpp
@@ -22,6 +22,8 @@
 #include <QIcon>
 #include <QPushButton>
 #include <QApplication>
+#include <QStyle>
+#include <QLayout>
 
 #include <QHash>
 
@@ -95,6 +97,14 @@
 
 void KAssistantDialog::Private::init()
 {
+    // Add appropriate margins
+    const QStyle *style = q->pageWidget()->style();
+    q->pageWidget()->layout()->setContentsMargins(
+        style->pixelMetric(QStyle::PM_LayoutLeftMargin),
+        style->pixelMetric(QStyle::PM_LayoutTopMargin),
+        style->pixelMetric(QStyle::PM_LayoutRightMargin),
+        style->pixelMetric(QStyle::PM_LayoutBottomMargin));
+
     QDialogButtonBox *buttonBox = q->buttonBox();
 
     buttonBox->setStandardButtons(QDialogButtonBox::Cancel | QDialogButtonBox::Help);