diff --git a/kcm/src/kcm_kscreen.h b/kcm/src/kcm_kscreen.h
--- a/kcm/src/kcm_kscreen.h
+++ b/kcm/src/kcm_kscreen.h
@@ -23,7 +23,7 @@
 
 class Widget;
 class QTimer;
-
+class QHBoxLayout;
 namespace KScreen
 {
 class ConfigOperation;
@@ -50,6 +50,7 @@
 
     Widget *mKScreenWidget;
     bool m_blockChanges = false;
+    QHBoxLayout *mMainLayout = nullptr;
 
 };
 
diff --git a/kcm/src/kcm_kscreen.cpp b/kcm/src/kcm_kscreen.cpp
--- a/kcm/src/kcm_kscreen.cpp
+++ b/kcm/src/kcm_kscreen.cpp
@@ -69,21 +69,22 @@
 
 void KCMKScreen::configReady(ConfigOperation* op)
 {
-    QHBoxLayout *layout = new QHBoxLayout(this);
-    layout->setMargin(0);
+    delete mMainLayout;
+    mMainLayout = new QHBoxLayout(this);
+    mMainLayout->setMargin(0);
 
     if (op->hasError()) {
         mKScreenWidget = 0;
         delete mKScreenWidget;
         QLabel *errorLabel = new QLabel(this);
-        layout->addWidget(errorLabel);
+        mMainLayout->addWidget(errorLabel);
         errorLabel->setText(i18n("No kscreen backend found. Please check your kscreen installation."));
         return;
     }
 
     if (!mKScreenWidget) {
         mKScreenWidget = new Widget(this);
-        layout->addWidget(mKScreenWidget);
+        mMainLayout->addWidget(mKScreenWidget);
         QObject::connect(mKScreenWidget, &Widget::changed,
                 this, &KCMKScreen::changed);
     }