diff --git a/CHANGELOG.md b/CHANGELOG.md
index 84d44d8c..9d0ae7c2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Javadoc generation with java 17
+
 ## [8.2.8] - 2023-09-13
 
 ### Changed
diff --git a/fj-core/src/main/java/org/fugerit/java/core/cfg/helpers/package.html b/fj-core/src/main/java/org/fugerit/java/core/cfg/helpers/package.html
index bb25a453..613eab9f 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/cfg/helpers/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/cfg/helpers/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Helper implementations of ConfigurableObject interface.</h1>
+		<h2>Helper implementations of ConfigurableObject interface.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/cfg/package.html b/fj-core/src/main/java/org/fugerit/java/core/cfg/package.html
index c9af1494..ab5c87a2 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/cfg/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/cfg/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Package containing classes, interfaces and exceptions for configuration handling.</h1>
+		<h2>Package containing classes, interfaces and exceptions for configuration handling.</h2>
 	</body>
 </html>
\ No newline at end of file
diff --git a/fj-core/src/main/java/org/fugerit/java/core/charset/package.html b/fj-core/src/main/java/org/fugerit/java/core/charset/package.html
index 8d2989e9..59412f94 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/charset/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/charset/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Classes for handling charsets and encoding.</h1>
+		<h2>Classes for handling charsets and encoding.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/cli/package.html b/fj-core/src/main/java/org/fugerit/java/core/cli/package.html
index 4059c0b0..d886c1bb 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/cli/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/cli/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Package containing utilities for command line interface.</h1>
+		<h2>Package containing utilities for command line interface.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/db/connect/package.html b/fj-core/src/main/java/org/fugerit/java/core/db/connect/package.html
index 8ce0f852..53d51580 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/db/connect/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/db/connect/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Classes for handling database connection.</h1>
+		<h2>Classes for handling database connection.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/db/dao/package.html b/fj-core/src/main/java/org/fugerit/java/core/db/dao/package.html
index 0d473ae3..7b0cd207 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/db/dao/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/db/dao/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Classes for handling database objects.</h1>
+		<h2>Classes for handling database objects.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/io/helper/package.html b/fj-core/src/main/java/org/fugerit/java/core/io/helper/package.html
index 5240fe8c..2d1f7ba5 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/io/helper/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/io/helper/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Package containing I/O helpers</h1>
+		<h2>Package containing I/O helpers</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/io/package.html b/fj-core/src/main/java/org/fugerit/java/core/io/package.html
index 5c62d23d..b9a38f36 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/io/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/io/package.html
@@ -5,7 +5,7 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>This package provides general purpose I/O API.</h1>
+		<h2>This package provides general purpose I/O API.</h2>
 		
 		<p>Main functionality provided :</p>
 		<ul> 
diff --git a/fj-core/src/main/java/org/fugerit/java/core/lang/compare/package.html b/fj-core/src/main/java/org/fugerit/java/core/lang/compare/package.html
index e6a0c2fd..15225f83 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/lang/compare/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/lang/compare/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Package containing utilities for comparations.</h1>
+		<h2>Package containing utilities for comparations.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/lang/helpers/package.html b/fj-core/src/main/java/org/fugerit/java/core/lang/helpers/package.html
index 4f122240..c808e7f0 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/lang/helpers/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/lang/helpers/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Package containing utilities regarding basic java objects.</h1>
+		<h2>Package containing utilities regarding basic java objects.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/util/package.html b/fj-core/src/main/java/org/fugerit/java/core/util/package.html
index 0aa74014..d2f4abe5 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/util/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/util/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Package containints API for command line tool.</h1>
+		<h2>Package containints API for command line tool.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/ch/package.html b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/ch/package.html
index 841e748b..ac7b7e90 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/ch/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/ch/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Pacakge containing ContentHandler helpers.</h1>
+		<h2>Pacakge containing ContentHandler helpers.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/dh/package.html b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/dh/package.html
index 481510ae..74dc0aa1 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/dh/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/dh/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Pacakge containing DefaultHandler helpers.</h1>
+		<h2>Pacakge containing DefaultHandler helpers.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/dtd/package.html b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/dtd/package.html
index b34f0260..77787b6d 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/dtd/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/dtd/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Pacakge containing helpers for DTDHandler.</h1>
+		<h2>Pacakge containing helpers for DTDHandler.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/eh/package.html b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/eh/package.html
index c072f0c7..ec3ce7e8 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/eh/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/eh/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Pacakge containing helpers for ErrorHandler.</h1>
+		<h2>Pacakge containing helpers for ErrorHandler.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/er/package.html b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/er/package.html
index 4132a743..10794076 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/er/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/er/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Pacakge containing helpers for EntityResolver.</h1>
+		<h2>Pacakge containing helpers for EntityResolver.</h2>
 	</body>
 </html>
diff --git a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/package.html b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/package.html
index 72be345f..136fa91d 100644
--- a/fj-core/src/main/java/org/fugerit/java/core/xml/sax/package.html
+++ b/fj-core/src/main/java/org/fugerit/java/core/xml/sax/package.html
@@ -4,6 +4,6 @@
 		<title>package javadoc description</title>
 	</head>
 	<body>
-		<h1>Collections of classes and package to use for handling XML documents through SAX.</h1>
+		<h2>Collections of classes and package to use for handling XML documents through SAX.</h2>
 	</body>
 </html>
