diff --git a/src/it/projects/MJAVADOC-642/pom.xml b/src/it/projects/MJAVADOC-642/pom.xml
index a086f869f..10ce349d0 100644
--- a/src/it/projects/MJAVADOC-642/pom.xml
+++ b/src/it/projects/MJAVADOC-642/pom.xml
@@ -23,6 +23,8 @@
     <url>https://issues.apache.org/jira/browse/MJAVADOC-642</url>
 
     <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
diff --git a/src/it/projects/MJAVADOC-642/src/main/java/mjavadoc642/Main.java b/src/it/projects/MJAVADOC-642/src/main/java/mjavadoc642/Main.java
index 088c2b3c0..7d95048bd 100644
--- a/src/it/projects/MJAVADOC-642/src/main/java/mjavadoc642/Main.java
+++ b/src/it/projects/MJAVADOC-642/src/main/java/mjavadoc642/Main.java
@@ -23,6 +23,12 @@
  * This is the main class.
  */
 public final class Main {
+
+    /**
+     * Mising description on auto generated constructor cause javadoc warrning.
+     */
+    Main() {}
+
     /**
      * This is the main method.
      *
diff --git a/src/it/projects/MJAVADOC-642_cmdline/pom.xml b/src/it/projects/MJAVADOC-642_cmdline/pom.xml
index 3297e5f63..5bb9fc687 100644
--- a/src/it/projects/MJAVADOC-642_cmdline/pom.xml
+++ b/src/it/projects/MJAVADOC-642_cmdline/pom.xml
@@ -23,6 +23,8 @@
     <url>https://issues.apache.org/jira/browse/MJAVADOC-642</url>
 
     <properties>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
diff --git a/src/it/projects/MJAVADOC-642_cmdline/src/main/java/mjavadoc642/Main.java b/src/it/projects/MJAVADOC-642_cmdline/src/main/java/mjavadoc642/Main.java
index 088c2b3c0..7d95048bd 100644
--- a/src/it/projects/MJAVADOC-642_cmdline/src/main/java/mjavadoc642/Main.java
+++ b/src/it/projects/MJAVADOC-642_cmdline/src/main/java/mjavadoc642/Main.java
@@ -23,6 +23,12 @@
  * This is the main class.
  */
 public final class Main {
+
+    /**
+     * Mising description on auto generated constructor cause javadoc warrning.
+     */
+    Main() {}
+
     /**
      * This is the main method.
      *
diff --git a/src/it/projects/MJAVADOC-770/src/main/java/mjavadoc770/Main.java b/src/it/projects/MJAVADOC-770/src/main/java/mjavadoc770/Main.java
index 3035fd2d6..776a8231b 100644
--- a/src/it/projects/MJAVADOC-770/src/main/java/mjavadoc770/Main.java
+++ b/src/it/projects/MJAVADOC-770/src/main/java/mjavadoc770/Main.java
@@ -23,6 +23,12 @@
  * This is the main class.
  */
 public final class Main {
+
+    /**
+     * Mising description on auto generated constructor cause javadoc warrning.
+     */
+    Main() {}
+
     /**
      * This is the main method.
      *