diff --git a/src/fr/devinsy/sikevadb/core/XMLSikevaDB.java b/src/fr/devinsy/sikevadb/core/XMLSikevaDB.java
index caa9813..399f46f 100644
--- a/src/fr/devinsy/sikevadb/core/XMLSikevaDB.java
+++ b/src/fr/devinsy/sikevadb/core/XMLSikevaDB.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013-2017 Christian Pierre MOMON <christian.momon@devinsy.fr>
+ * Copyright (C) 2013-2018 Christian Pierre MOMON <christian.momon@devinsy.fr>
  * 
  * This file is part of SikevaDB, simple key value database.
  * 
diff --git a/src/fr/devinsy/sikevadb/demo/SikevaDBDemo.java b/src/fr/devinsy/sikevadb/demo/SikevaDBDemo.java
index 9b81f27..2d6d734 100644
--- a/src/fr/devinsy/sikevadb/demo/SikevaDBDemo.java
+++ b/src/fr/devinsy/sikevadb/demo/SikevaDBDemo.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013-2017 Christian Pierre MOMON <christian.momon@devinsy.fr>
+ * Copyright (C) 2013-2018 Christian Pierre MOMON <christian.momon@devinsy.fr>
  * 
  * This file is part of SikevaDB, simple key value database.
  * 
diff --git a/src/fr/devinsy/sikevadb/filetree/FileTreeSikevaDB.java b/src/fr/devinsy/sikevadb/filetree/FileTreeSikevaDB.java
index 3cc0e6c..aababf4 100644
--- a/src/fr/devinsy/sikevadb/filetree/FileTreeSikevaDB.java
+++ b/src/fr/devinsy/sikevadb/filetree/FileTreeSikevaDB.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013-2017 Christian Pierre MOMON <christian.momon@devinsy.fr>
+ * Copyright (C) 2013-2018 Christian Pierre MOMON <christian.momon@devinsy.fr>
  * 
  * This file is part of SikevaDB, simple key value database.
  * 
@@ -735,40 +735,6 @@ public class FileTreeSikevaDB implements SikevaDB
 		return result;
 	}
 
-	/* (non-Javadoc)
-	 * @see fr.devinsy.sikevadb.core.SikevaDB#getKeys()
-	 */
-	@Override
-	public StringList getTopKeys() throws SikevaDBException
-	{
-		StringList result;
-
-		if (isClosed())
-		{
-			throw new ClosedDatabaseException();
-		}
-		else
-		{
-			result = new StringList((int) countOfElements());
-
-			File[] topFiles = this.dataDirectory.listFiles();
-			for (File file : topFiles)
-			{
-				if (file.isFile())
-				{
-					result.add(file.getName());
-				}
-				else if (file.isDirectory())
-				{
-					result.add(file.getName());
-				}
-			}
-		}
-
-		//
-		return result;
-	}
-
 	/**
 	 * Gets the login.
 	 * 
@@ -835,6 +801,40 @@ public class FileTreeSikevaDB implements SikevaDB
 		return result;
 	}
 
+	/* (non-Javadoc)
+	 * @see fr.devinsy.sikevadb.core.SikevaDB#getKeys()
+	 */
+	@Override
+	public StringList getTopKeys() throws SikevaDBException
+	{
+		StringList result;
+
+		if (isClosed())
+		{
+			throw new ClosedDatabaseException();
+		}
+		else
+		{
+			result = new StringList((int) countOfElements());
+
+			File[] topFiles = this.dataDirectory.listFiles();
+			for (File file : topFiles)
+			{
+				if (file.isFile())
+				{
+					result.add(file.getName());
+				}
+				else if (file.isDirectory())
+				{
+					result.add(file.getName());
+				}
+			}
+		}
+
+		//
+		return result;
+	}
+
 	/* (non-Javadoc)
 	 * @see fr.devinsy.sikevadb.core.SikevaDB#getValue(java.lang.String)
 	 */
diff --git a/src/fr/devinsy/sikevadb/sql/SQLSikevaDB.java b/src/fr/devinsy/sikevadb/sql/SQLSikevaDB.java
index 3a1ea48..aaed024 100644
--- a/src/fr/devinsy/sikevadb/sql/SQLSikevaDB.java
+++ b/src/fr/devinsy/sikevadb/sql/SQLSikevaDB.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013-2017 Christian Pierre MOMON <christian.momon@devinsy.fr>
+ * Copyright (C) 2013-2018 Christian Pierre MOMON <christian.momon@devinsy.fr>
  * 
  * This file is part of SikevaDB, simple key value database.
  * 
diff --git a/test/fr/devinsy/sikevadb/filetree/TreeFileSikevaDBTest.java b/test/fr/devinsy/sikevadb/filetree/TreeFileSikevaDBTest.java
index ccef121..33b2806 100644
--- a/test/fr/devinsy/sikevadb/filetree/TreeFileSikevaDBTest.java
+++ b/test/fr/devinsy/sikevadb/filetree/TreeFileSikevaDBTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013-2017 Christian Pierre MOMON, DEVINSY
+ * Copyright (C) 2013-2018 Christian Pierre MOMON, DEVINSY
  * 
  * This file is part of SikevaDB, simple key value database.
  * 
diff --git a/test/fr/devinsy/sikevadb/sql/SQLSikevaDBTest.java b/test/fr/devinsy/sikevadb/sql/SQLSikevaDBTest.java
index df6c3cf..171869b 100644
--- a/test/fr/devinsy/sikevadb/sql/SQLSikevaDBTest.java
+++ b/test/fr/devinsy/sikevadb/sql/SQLSikevaDBTest.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013-2017 Christian Pierre MOMON, DEVINSY
+ * Copyright (C) 2013-2018 Christian Pierre MOMON, DEVINSY
  * 
  * This file is part of SikevaDB, simple key value database.
  *