diff --git a/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/JdbcProperties.java b/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/JdbcProperties.java
index c8e87dea06..96f0b47625 100644
--- a/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/JdbcProperties.java
+++ b/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/JdbcProperties.java
@@ -1,3 +1,9 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
 package org.hibernate.testing.jdbc;
 
 import java.io.IOException;
diff --git a/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/leak/ConnectionLeakException.java b/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/leak/ConnectionLeakException.java
index 19f1a8f371..598c22e03e 100644
--- a/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/leak/ConnectionLeakException.java
+++ b/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/leak/ConnectionLeakException.java
@@ -1,3 +1,9 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
 package org.hibernate.testing.jdbc.leak;
 
 /**
diff --git a/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/leak/IdleConnectionCounter.java b/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/leak/IdleConnectionCounter.java
index a205b3666b..23f44353b8 100644
--- a/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/leak/IdleConnectionCounter.java
+++ b/hibernate-testing/src/main/java/org/hibernate/testing/jdbc/leak/IdleConnectionCounter.java
@@ -1,3 +1,9 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
 package org.hibernate.testing.jdbc.leak;
 
 import java.sql.Connection;