diff --git a/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/api/Config.java b/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/api/Config.java
index 8d13569..d7fbd25 100644
--- a/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/api/Config.java
+++ b/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/api/Config.java
@@ -33,7 +33,7 @@
  * backing a configuration template method. Hereby this annotation can be used in multiple
  * ways and combined with other annotations such as {@link WithConfigOperator}, {@link WithPropertyConverter}.
  *
- * <h3>Simplest variant</h3>
+ * <h1>Simplest variant</h1>
  * Below the most simple variant of a configured class is given:
  * <pre>
  * package a.b;
diff --git a/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/api/DynamicValue.java b/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/api/DynamicValue.java
index c92125d..633de97 100644
--- a/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/api/DynamicValue.java
+++ b/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/api/DynamicValue.java
@@ -31,7 +31,7 @@
  * <p>Types of this interface can be used as injection targets in injected beans or as template resiult on configuration
  * templates.</p>
  *
- * <h3>Implementation Specification</h3>
+ * <h1>Implementation Specification</h1>
  * Implementation of this interface must be
  * <ul>
  *     <li>Serializable, when also the item stored is serializable</li>
diff --git a/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/spi/BaseDynamicValue.java b/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/spi/BaseDynamicValue.java
index e29528d..1cb5fef 100644
--- a/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/spi/BaseDynamicValue.java
+++ b/modules/injection/injection-api/src/main/java/org/apache/tamaya/inject/spi/BaseDynamicValue.java
@@ -43,7 +43,7 @@
  * activate the change in the {@link DynamicValue}. Similarly an instance also can ignore all
  * later changes to the value.
  *
- * <h3>Implementation Specification</h3>
+ * <h1>Implementation Specification</h1>
  * This class is
  * <ul>
  * <li>Serializable, when also the item stored is serializable</li>