diff --git a/smack-experimental/src/test/java/org/jivesoftware/smackx/hash/HashElementTest.java b/smack-experimental/src/test/java/org/jivesoftware/smackx/hash/HashElementTest.java
index a2df65668..1fae3e3f9 100644
--- a/smack-experimental/src/test/java/org/jivesoftware/smackx/hash/HashElementTest.java
+++ b/smack-experimental/src/test/java/org/jivesoftware/smackx/hash/HashElementTest.java
@@ -1,3 +1,19 @@
+/**
+ *
+ * Copyright 2014 Andriy Tsykholyas
+ *
+ * Licensed 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.jivesoftware.smackx.hash;
 
 import org.jivesoftware.smack.test.util.SmackTestSuite;
@@ -10,7 +26,7 @@ import org.junit.Test;
 import static junit.framework.TestCase.assertEquals;
 
 /**
- * Created by vanitas on 30.05.17.
+ * Test toXML and parse of HashElement and HashElementProvider.
  */
 public class HashElementTest extends SmackTestSuite {
 
diff --git a/smack-experimental/src/test/java/org/jivesoftware/smackx/hash/HashUtilTest.java b/smack-experimental/src/test/java/org/jivesoftware/smackx/hash/HashUtilTest.java
index 0b3604acd..bc8e2378e 100644
--- a/smack-experimental/src/test/java/org/jivesoftware/smackx/hash/HashUtilTest.java
+++ b/smack-experimental/src/test/java/org/jivesoftware/smackx/hash/HashUtilTest.java
@@ -1,3 +1,19 @@
+/**
+ *
+ * Copyright 2014 Andriy Tsykholyas
+ *
+ * Licensed 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.jivesoftware.smackx.hash;
 
 import org.jivesoftware.smack.test.util.SmackTestSuite;