diff --git a/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/JsonSupport.java b/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/JsonSupport.java
index 1586438..6efaeb2 100644
--- a/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/JsonSupport.java
+++ b/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/JsonSupport.java
@@ -18,8 +18,6 @@
  */
 package org.apache.sling.maven.bundlesupport;
 
-import static org.apache.sling.jcr.contentparser.impl.JsonTicksConverter.tickToDoubleQuote;
-
 import java.io.StringReader;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -74,24 +72,7 @@
             return jsonReader.readArray();
         }
     }
-    
-    /**
-     * Validate JSON structure
-     * @param jsonString JSON string
-     * @param tickToDoubleQuote Tick to double quote
-     * @throws javax.json.JsonException when JSON structure is invalid
-     */
-    public static void validateJsonStructure(String jsonString, boolean tickToDoubleQuote) {
-        String transformedJsonString = jsonString;
-        if (tickToDoubleQuote) {
-            transformedJsonString = tickToDoubleQuote(jsonString);
-        }
-        try (StringReader reader = new StringReader(transformedJsonString);
-                JsonReader jsonReader = JSON_READER_FACTORY.createReader(reader)) {
-            jsonReader.read();
-        }
-    }
-    
+
     @SuppressWarnings("unchecked")
     public static void accumulate(Map<String,Object> obj, String name, String value) {
         Object current = obj.get(name);
@@ -99,7 +80,7 @@
             obj.put(name, value);
         }
         else if (current instanceof List) {
-            List<String> array = new ArrayList<>((List)current);
+            List<String> array = new ArrayList<>((List<String>)current);
             array.add(value);
             obj.put(name, array);
         }
diff --git a/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/ValidationMojo.java b/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/ValidationMojo.java
index faa3ba1..22dcf2c 100644
--- a/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/ValidationMojo.java
+++ b/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/ValidationMojo.java
@@ -18,195 +18,25 @@
  */
 package org.apache.sling.maven.bundlesupport;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.IOException;
-import java.nio.charset.StandardCharsets;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import javax.json.JsonException;
-
-import org.apache.commons.io.IOUtils;
-import org.apache.commons.lang3.StringUtils;
-import org.apache.commons.lang3.math.NumberUtils;
-import org.apache.maven.model.Resource;
 import org.apache.maven.plugin.AbstractMojo;
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.plugin.MojoFailureException;
-import org.apache.maven.plugins.annotations.Component;
 import org.apache.maven.plugins.annotations.LifecyclePhase;
 import org.apache.maven.plugins.annotations.Mojo;
-import org.apache.maven.plugins.annotations.Parameter;
-import org.apache.maven.project.MavenProject;
-import org.codehaus.plexus.util.Scanner;
-import org.sonatype.plexus.build.incremental.BuildContext;
 
 /**
  * The <code>validate</code> goal checks the JSON code of a bundle.
+ * No longer functional.
+ * @deprecated Please use a dedicated plugin like <a href="https://github.com/sylvainlaurent/yaml-json-validator-maven-plugin">yaml-json-validator-maven-plugin</a> instead.
  */
+@Deprecated
 @Mojo(name = "validate", defaultPhase = LifecyclePhase.PROCESS_RESOURCES)
 public class ValidationMojo extends AbstractMojo {
 
-    private static final Pattern LINE_NUMBER_PATTERN = Pattern.compile("lineNumber=(\\d+),");
-    private static final Pattern COLUMN_NUMBER_PATTERN = Pattern.compile("columnNumber=(\\d+),");
-    private static final Pattern MESSAGE_CLEANUP_PATTERN = Pattern.compile("^(.*) on \\[lineNumber=\\d+, columnNumber=\\d+, streamOffset=\\d+\\](.*)$", Pattern.DOTALL);
-    
-    /**
-     * The Maven project.
-     */
-    @Parameter( defaultValue = "${project}", readonly = true )
-    private MavenProject project;
-
-    /**
-     * Whether to skip the validation. 
-     */
-    @Parameter(property = "sling.validation.skip", defaultValue = "false", required = true)
-    private boolean skip;
-
-    /**
-     * Whether to skip the json validation.
-     * At the time, there's no difference between <code>skip</code> and <code>skipJson</code> because only JSON files will be validated by now.
-     */
-    @Parameter(property = "sling.validation.skipJson", defaultValue = "false", required = true)
-    private boolean skipJson;
-
-    /**
-     * Whether to accept quote ticks in JSON files or not. 
-     */
-    @Parameter(property = "sling.validation.jsonQuoteTick", defaultValue = "false", required = false)
-    private boolean jsonQuoteTick;
-
-    @Component
-    private BuildContext buildContext;
-    
     /**
      * @see org.apache.maven.plugin.AbstractMojo#execute()
      */
     public void execute() throws MojoExecutionException, MojoFailureException {
-        if ( this.skip ) {
-            getLog().info("Validation is skipped.");
-            return;
-        }
-        
-        final Iterator<Resource> rsrcIterator = this.project.getResources().iterator();
-        while ( rsrcIterator.hasNext() ) {
-            final Resource rsrc = rsrcIterator.next();
-
-            final File directory = new File(rsrc.getDirectory());
-            if ( directory.exists() ) {
-
-                if (!buildContext.hasDelta(directory)) {
-                    getLog().debug("No files found to validate, skipping.");
-                    return;
-                }
-                
-                getLog().debug("Scanning " + rsrc.getDirectory());
-                final Scanner scanner = buildContext.newScanner(directory);
-
-                if ( rsrc.getExcludes() != null && rsrc.getExcludes().size() > 0 ) {
-                    scanner.setExcludes( (String[]) rsrc.getExcludes().toArray(new String[rsrc.getExcludes().size()] ) );
-                }
-                scanner.addDefaultExcludes();
-                if ( rsrc.getIncludes() != null && rsrc.getIncludes().size() > 0 ) {
-                    scanner.setIncludes( (String[]) rsrc.getIncludes().toArray(new String[rsrc.getIncludes().size()] ));
-                }
-
-                scanner.scan();
-
-                final String[] files = scanner.getIncludedFiles();
-                int countProcessed = 0;
-                List<Exception> failures = new ArrayList<>();
-                if ( files != null ) {
-                    for(int m=0; m<files.length; m++) {
-                        final File file = new File(directory, files[m]);
-                        buildContext.removeMessages(file);
-                        try {
-                            this.validate(file);
-                        }
-                        catch (Exception ex) {
-                            failures.add(ex);
-                            buildContext.addMessage(file,
-                                    parseLineNumber(ex.getMessage()),
-                                    parseColumnNumber(ex.getMessage()), 
-                                    cleanupMessage(ex.getMessage()),
-                                    BuildContext.SEVERITY_ERROR,
-                                    ex.getCause());
-                        }
-                        countProcessed++;
-                    }
-                }
-                
-                if (!failures.isEmpty()) {
-                    if (!buildContext.isIncremental()) {
-                        throw new MojoFailureException("Validated " + countProcessed + " file(s), found " + failures.size() + " failures.");
-                    }
-                }
-                else {
-                    getLog().info("Validated " + countProcessed + " file(s).");
-                }
-            }
-        }
+        getLog().warn("This mojo does no longer work. Please use a dedicated plugin like https://github.com/sylvainlaurent/yaml-json-validator-maven-plugin instead.");
     }
-
-    private void validate(final File file) throws MojoExecutionException {
-        getLog().debug("Validating " + file.getPath());
-        if ( file.isFile() ) {
-            if ( file.getName().endsWith(".json") && !this.skipJson ) {
-                getLog().debug("Validation JSON file " + file.getPath());
-                FileInputStream fis = null;
-                String json = null;
-                try {
-                    fis = new FileInputStream(file);
-                    json = IOUtils.toString(fis, StandardCharsets.UTF_8);
-                } catch (IOException ex) {
-                    throw new MojoExecutionException(ex.getMessage(), ex);
-                } finally {
-                    IOUtils.closeQuietly(fis);
-                }
-                // validate JSON
-                try {
-                    JsonSupport.validateJsonStructure(json, jsonQuoteTick);
-                } catch (JsonException ex) {
-                    throw new MojoExecutionException("Invalid JSON: " + ex.getMessage());
-                }
-            }
-        }
-    }
-    
-    static int parseLineNumber(String message) {
-        return parseNumber(message, LINE_NUMBER_PATTERN);
-    }
-    
-    static int parseColumnNumber(String message) {
-        return parseNumber(message, COLUMN_NUMBER_PATTERN);
-    }
-
-    static int parseNumber(String message, Pattern pattern) {
-        Matcher matcher = pattern.matcher(message);
-        if (matcher.find()) {
-            return NumberUtils.toInt(matcher.group(1));
-        }
-        else {
-            return 0;
-        }
-    }
-    
-    static String cleanupMessage(String message) {
-        String result;
-        Matcher matcher = MESSAGE_CLEANUP_PATTERN.matcher(message);
-        if (matcher.matches()) {
-            result = matcher.group(1) + matcher.group(2);
-        }
-        else {
-            result = message;
-        }
-        result = StringUtils.replace(result, "\n", "\\n");
-        result = StringUtils.replace(result, "\r", "");
-        return result;
-    }
-
 }
diff --git a/sling-maven-plugin/src/test/java/org/apache/sling/maven/bundlesupport/JsonSupportTest.java b/sling-maven-plugin/src/test/java/org/apache/sling/maven/bundlesupport/JsonSupportTest.java
index 5cead52..24f13b3 100644
--- a/sling-maven-plugin/src/test/java/org/apache/sling/maven/bundlesupport/JsonSupportTest.java
+++ b/sling-maven-plugin/src/test/java/org/apache/sling/maven/bundlesupport/JsonSupportTest.java
@@ -22,14 +22,12 @@
 import static org.apache.sling.maven.bundlesupport.JsonSupport.parseArray;
 import static org.apache.sling.maven.bundlesupport.JsonSupport.parseObject;
 import static org.apache.sling.maven.bundlesupport.JsonSupport.toJson;
-import static org.apache.sling.maven.bundlesupport.JsonSupport.validateJsonStructure;
 import static org.junit.Assert.assertEquals;
 
 import java.util.HashMap;
 import java.util.Map;
 
 import javax.json.JsonArray;
-import javax.json.JsonException;
 import javax.json.JsonObject;
 
 import org.junit.Test;
@@ -53,23 +51,6 @@
     }
 
     @Test
-    public void testValidateJsonStructure() {
-        validateJsonStructure("{\"prop1\":123}", false);
-        validateJsonStructure("[{\"prop1\":123}]", false);
-        validateJsonStructure("{'prop1':123}", true);
-    }
-
-    @Test(expected=JsonException.class)
-    public void testValidateJsonStructure_Invalid() {
-        validateJsonStructure("wurstbrot", false);
-    }
-
-    @Test(expected=JsonException.class)
-    public void testValidateJsonStructure_InvalidQuoteTick() {
-        validateJsonStructure("{'prop1':123}", false);
-    }
-
-    @Test
     public void testAccumulate_NewValue() {
         Map<String,Object> map = new HashMap<>();
         accumulate(map, "prop1", "value1");
diff --git a/sling-maven-plugin/src/test/java/org/apache/sling/maven/bundlesupport/ValidationMojoTest.java b/sling-maven-plugin/src/test/java/org/apache/sling/maven/bundlesupport/ValidationMojoTest.java
deleted file mode 100644
index 584c62f..0000000
--- a/sling-maven-plugin/src/test/java/org/apache/sling/maven/bundlesupport/ValidationMojoTest.java
+++ /dev/null
@@ -1,47 +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.apache.sling.maven.bundlesupport;
-
-import static org.junit.Assert.assertEquals;
-
-import org.junit.Test;
-
-public class ValidationMojoTest {
-    
-    private static String MESSAGE = "JSON validation failed: Unexpected character '\n' (Codepoint: 10) "
-            + "on [lineNumber=47, columnNumber=1434, streamOffset=2866]. "
-            + "Reason is [[End of file hit too early]]";
-
-    @Test
-    public void testParseLineNumber() {
-        assertEquals(47, ValidationMojo.parseLineNumber(MESSAGE));
-    }
-
-    @Test
-    public void testParseColumnNumber() throws Exception {
-        assertEquals(1434, ValidationMojo.parseColumnNumber(MESSAGE));
-    }
-
-    @Test
-    public void testCleanupMessage() throws Exception {
-        assertEquals("JSON validation failed: Unexpected character '\\n' (Codepoint: 10). Reason is [[End of file hit too early]]",
-                ValidationMojo.cleanupMessage(MESSAGE));
-    }
-
-}