diff --git a/php/php.code.analysis/src/org/netbeans/modules/php/analysis/options/AnalysisOptions.java b/php/php.code.analysis/src/org/netbeans/modules/php/analysis/options/AnalysisOptions.java
index 9ab6a6d6fb3d..1edc11740fda 100644
--- a/php/php.code.analysis/src/org/netbeans/modules/php/analysis/options/AnalysisOptions.java
+++ b/php/php.code.analysis/src/org/netbeans/modules/php/analysis/options/AnalysisOptions.java
@@ -58,7 +58,7 @@ public final class AnalysisOptions {
     private static final String PHPSTAN_CONFIGURATION = "phpstan.configuration"; // NOI18N
     private static final String PHPSTAN_MEMORY_LIMIT = "phpstan.memory.limit"; // NOI18N
     public static final int PHPSTAN_MIN_LEVEL = Integer.getInteger("nb.phpstan.min.level", 0); // NOI18N
-    public static final int PHPSTAN_MAX_LEVEL = Integer.getInteger("nb.phpstan.max.level", 9); // NOI18N
+    public static final int PHPSTAN_MAX_LEVEL = Integer.getInteger("nb.phpstan.max.level", 10); // NOI18N
     // Psalm - PHP Static Analysis Tool
     private static final String PSALM_PATH = "psalm.path"; // NOI18N
     private static final String PSALM_LEVEL = "psalm.level"; // NOI18N
diff --git a/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/PHPStanLevelListCellRenderer.java b/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/PHPStanLevelListCellRenderer.java
deleted file mode 100644
index d98229b2d9c8..000000000000
--- a/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/PHPStanLevelListCellRenderer.java
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-package org.netbeans.modules.php.analysis.ui;
-
-import java.awt.Component;
-import javax.swing.JList;
-import javax.swing.ListCellRenderer;
-import org.netbeans.modules.php.analysis.options.AnalysisOptions;
-
-public class PHPStanLevelListCellRenderer implements ListCellRenderer<String> {
-
-    private final ListCellRenderer<? super String> defaultRenderer;
-
-    public PHPStanLevelListCellRenderer(ListCellRenderer<? super String> defaultRenderer) {
-        this.defaultRenderer = defaultRenderer;
-    }
-
-    @Override
-    public Component getListCellRendererComponent(JList<? extends String> list, String value, int index, boolean isSelected, boolean cellHasFocus) {
-        String level = value;
-        if (String.valueOf(AnalysisOptions.PHPSTAN_MAX_LEVEL).equals(level)) {
-            level += " (max)"; // NOI18N
-        }
-        return defaultRenderer.getListCellRendererComponent(list, level, index, isSelected, cellHasFocus);
-    }
-
-}
diff --git a/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/analyzer/PHPStanCustomizerPanel.java b/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/analyzer/PHPStanCustomizerPanel.java
index 6912cf04a52f..237d5956f1f9 100644
--- a/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/analyzer/PHPStanCustomizerPanel.java
+++ b/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/analyzer/PHPStanCustomizerPanel.java
@@ -37,7 +37,6 @@
 import org.netbeans.modules.analysis.spi.Analyzer;
 import org.netbeans.modules.php.analysis.commands.PHPStan;
 import org.netbeans.modules.php.analysis.options.AnalysisOptions;
-import org.netbeans.modules.php.analysis.ui.PHPStanLevelListCellRenderer;
 import org.netbeans.modules.php.analysis.options.AnalysisOptionsValidator;
 import org.netbeans.modules.php.analysis.options.ValidatorPHPStanParameter;
 import org.netbeans.modules.php.analysis.ui.AnalysisDefaultDocumentListener;
@@ -121,7 +120,6 @@ private void initLevelComboBox() {
             phpStanLevelComboBox.addItem(String.valueOf(i));
         }
         phpStanLevelComboBox.addItem(PHPStan.MAX_LEVEL);
-        phpStanLevelComboBox.setRenderer(new PHPStanLevelListCellRenderer(phpStanLevelComboBox.getRenderer()));
         phpStanLevelComboBox.setSelectedItem(getValidLevel());
         phpStanLevelComboBox.addItemListener(e -> setLevel());
     }
diff --git a/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/options/PHPStanOptionsPanel.java b/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/options/PHPStanOptionsPanel.java
index 1fe379d5fbf6..7ae0ae3dbe4a 100644
--- a/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/options/PHPStanOptionsPanel.java
+++ b/php/php.code.analysis/src/org/netbeans/modules/php/analysis/ui/options/PHPStanOptionsPanel.java
@@ -39,7 +39,6 @@
 import org.netbeans.modules.php.analysis.options.AnalysisOptions;
 import org.netbeans.modules.php.analysis.options.AnalysisOptionsValidator;
 import org.netbeans.modules.php.analysis.ui.AnalysisDefaultDocumentListener;
-import org.netbeans.modules.php.analysis.ui.PHPStanLevelListCellRenderer;
 import org.netbeans.modules.php.analysis.options.ValidatorPHPStanParameter;
 import org.netbeans.modules.php.analysis.util.AnalysisUiUtils;
 import org.netbeans.modules.php.api.validation.ValidationResult;
@@ -78,7 +77,6 @@ private void init() {
             phpStanLevelComboBox.addItem(String.valueOf(i));
         }
         phpStanLevelComboBox.addItem(PHPStan.MAX_LEVEL);
-        phpStanLevelComboBox.setRenderer(new PHPStanLevelListCellRenderer(phpStanLevelComboBox.getRenderer()));
         // add listener
         DocumentListener defaultDocumentListener = new AnalysisDefaultDocumentListener(() -> fireChange());
         phpStanTextField.getDocument().addDocumentListener(defaultDocumentListener);