diff --git a/CMakeLists.txt b/CMakeLists.txt
index d2f842c..77f98c2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,7 +26,7 @@ set(CMAKE_AUTOUIC ON)
 set(CMAKE_AUTORCC ON)
 
 set(KF5_MINIMUM_VERSION "5.36.0")
-set(KF5SCREEN_MINIMUM_VERSION "5.27.0")
+set(KF5SCREEN_MINIMUM_VERSION "5.2.0")
 set(LXQT_MINIMUM_VERSION "1.4.0")
 set(QT_MINIMUM_VERSION "5.15.0")
 
diff --git a/lxqt-config-monitor/kscreenutils.cpp b/lxqt-config-monitor/kscreenutils.cpp
index 6deee2a..be2634d 100644
--- a/lxqt-config-monitor/kscreenutils.cpp
+++ b/lxqt-config-monitor/kscreenutils.cpp
@@ -63,9 +63,9 @@ void KScreenUtils::extended(KScreen::ConfigPtr &config)
         output->setPos(pos);
         output->setEnabled(true);
         //first left one as primary
-        output->setPriority(width == 0 ? 1 : 0);
+        output->setPrimary(width == 0);
         KScreen::ModePtr mode(output->currentMode());
-        //if (!mode)
+        //if (!mode) 
         {
             // Set the biggest mode between preferred modes and the first mode.
             mode = output->modes().first();
@@ -83,7 +83,7 @@ void KScreenUtils::extended(KScreen::ConfigPtr &config)
             if (mode)
                 output->setCurrentModeId(mode->id());
         }
-        if (mode)
+        if (mode) 
             width += mode->size().width();
     }
 }
diff --git a/lxqt-config-monitor/loadsettings.cpp b/lxqt-config-monitor/loadsettings.cpp
index 26d669a..284cad0 100644
--- a/lxqt-config-monitor/loadsettings.cpp
+++ b/lxqt-config-monitor/loadsettings.cpp
@@ -133,7 +133,7 @@ bool applySettings(KScreen::ConfigPtr config, QList<MonitorSettings> monitors)
                 if( !output->isConnected() )
                     continue;
                 output->setEnabled( monitor.enabled );
-                output->setPriority( monitor.primary ? 1 : 0 );
+                output->setPrimary( monitor.primary );
                 output->setPos( QPoint(monitor.xPos, monitor.yPos) );
                 output->setRotation( (KScreen::Output::Rotation)(monitor.rotation) );
                 // output->setCurrentModeId could fail. KScreen sometimes changes mode Id.
diff --git a/lxqt-config-monitor/monitorwidget.cpp b/lxqt-config-monitor/monitorwidget.cpp
index b4b7fb9..41883c2 100644
--- a/lxqt-config-monitor/monitorwidget.cpp
+++ b/lxqt-config-monitor/monitorwidget.cpp
@@ -138,7 +138,7 @@ MonitorWidget::MonitorWidget(KScreen::OutputPtr output, KScreen::ConfigPtr confi
     if (config->connectedOutputs().count() == 1) {
         setOnlyMonitor(true);
         // There isn't always a primary output. Gross.
-        output->setPriority(1);
+        output->setPrimary(true);
     }
 
     ui.xPosSpinBox->setValue(output->pos().x());
@@ -208,7 +208,7 @@ void MonitorWidget::onBehaviorChanged(int idx)
     ui.xPosSpinBox->setVisible(idx == ExtendDisplay);
     ui.yPosSpinBox->setVisible(idx == ExtendDisplay);
 
-    output->setPriority(idx == PrimaryDisplay ? 1 : 0);
+    output->setPrimary(idx == PrimaryDisplay);
     if(idx == PrimaryDisplay)
         emit primaryOutputChanged(this);
 }