diff --git a/src/main/java/org/openstreetmap/josm/plugins/mapwithai/backend/MapWithAIPreferenceHelper.java b/src/main/java/org/openstreetmap/josm/plugins/mapwithai/backend/MapWithAIPreferenceHelper.java
index 3173931..caef50c 100644
--- a/src/main/java/org/openstreetmap/josm/plugins/mapwithai/backend/MapWithAIPreferenceHelper.java
+++ b/src/main/java/org/openstreetmap/josm/plugins/mapwithai/backend/MapWithAIPreferenceHelper.java
@@ -15,7 +15,7 @@ import org.openstreetmap.josm.plugins.mapwithai.data.mapwithai.MapWithAILayerInf
 import org.openstreetmap.josm.spi.preferences.Config;
 
 public final class MapWithAIPreferenceHelper {
-    private static final int DEFAULT_MAXIMUM_ADDITION = 20;
+    private static final int DEFAULT_MAXIMUM_ADDITION = 100;
     private static final String AUTOSWITCHLAYERS = MapWithAIPlugin.NAME.concat(".autoswitchlayers");
     private static final String MERGEBUILDINGADDRESSES = MapWithAIPlugin.NAME.concat(".mergebuildingaddresses");
     private static final String MAXIMUMSELECTION = MapWithAIPlugin.NAME.concat(".maximumselection");
diff --git a/src/main/java/org/openstreetmap/josm/plugins/mapwithai/gui/preferences/MapWithAIPreferences.java b/src/main/java/org/openstreetmap/josm/plugins/mapwithai/gui/preferences/MapWithAIPreferences.java
index 7bd5718..8445032 100644
--- a/src/main/java/org/openstreetmap/josm/plugins/mapwithai/gui/preferences/MapWithAIPreferences.java
+++ b/src/main/java/org/openstreetmap/josm/plugins/mapwithai/gui/preferences/MapWithAIPreferences.java
@@ -53,8 +53,8 @@ public class MapWithAIPreferences extends DefaultTabPreferenceSetting {
         super("mapwithai", tr("MapWithAI preferences"), tr("Modify MapWithAI preferences"), false, new JTabbedPane());
 
         switchLayerCheckBox = new JCheckBox();
-        maximumAdditionSpinner = new JSpinner(
-                new SpinnerNumberModel(MapWithAIPreferenceHelper.getMaximumAddition(), 0, 500, 1));
+        maximumAdditionSpinner = new JSpinner(new SpinnerNumberModel(MapWithAIPreferenceHelper.getMaximumAddition(), 0,
+                MapWithAIPreferenceHelper.getDefaultMaximumAddition() * 10, 1));
         mergeBuildingAddressCheckBox = new JCheckBox();
         replacementTableDisplayData = new ArrayList<>();
         fillReplacementTagDisplayData(replacementTableDisplayData);