diff --git a/lxqt-config-session/basicsettings.cpp b/lxqt-config-session/basicsettings.cpp
index 832f489c..75facd14 100644
--- a/lxqt-config-session/basicsettings.cpp
+++ b/lxqt-config-session/basicsettings.cpp
@@ -37,7 +37,7 @@ static const QLatin1String leaveConfirmationKey("leave_confirmation");
 static const QLatin1String lockBeforePowerActionsKey("lock_screen_before_power_actions");
 static const QLatin1String powerActionsAfterLockDelayKey("power_actions_after_lock_delay");
 static const QLatin1String QtScaleKey("QT_SCALE_FACTOR");
-static const QLatin1String GdkScaleKey("GDK_SCALE");
+static const QLatin1String GdkScaleKey("GDK_DPI_SCALE");
 static const QLatin1String openboxValue("openbox");
 
 BasicSettings::BasicSettings(LXQt::Settings *settings, QWidget *parent) :
diff --git a/lxqt-config-session/basicsettings.ui b/lxqt-config-session/basicsettings.ui
index 62650628..d2d12acc 100644
--- a/lxqt-config-session/basicsettings.ui
+++ b/lxqt-config-session/basicsettings.ui
@@ -133,7 +133,7 @@
          <double>4.000000000000000</double>
         </property>
         <property name="singleStep">
-         <double>0.500000000000000</double>
+         <double>0.100000000000000</double>
         </property>
         <property name="value">
          <double>1.000000000000000</double>
diff --git a/lxqt-config-session/environmentpage.cpp b/lxqt-config-session/environmentpage.cpp
index d6ef8124..8295832a 100644
--- a/lxqt-config-session/environmentpage.cpp
+++ b/lxqt-config-session/environmentpage.cpp
@@ -161,7 +161,7 @@ void EnvironmentPage::updateScaleFactor()
 {
     m_settings->beginGroup(QL1S("Environment"));
     updateItem(QL1S("QT_SCALE_FACTOR"), m_settings->value(QL1S("QT_SCALE_FACTOR"), 1).toString());
-    updateItem(QL1S("GDK_SCALE"), m_settings->value(QL1S("GDK_SCALE"), 1).toString());
+    updateItem(QL1S("GDK_DPI_SCALE"), m_settings->value(QL1S("GDK_DPI_SCALE"), 1).toString());
     m_settings->endGroup();
 }