diff --git a/src/org/dclermonte/siba/model/SibaManager.java b/src/org/dclermonte/siba/model/SibaManager.java
index 96b6652..f9e9d8e 100644
--- a/src/org/dclermonte/siba/model/SibaManager.java
+++ b/src/org/dclermonte/siba/model/SibaManager.java
@@ -21,9 +21,7 @@ package org.dclermonte.siba.model;
 
 import java.io.BufferedOutputStream;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.FileOutputStream;
-import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.OutputStream;
@@ -32,7 +30,6 @@ import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.ResourceBundle;
 
-import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
 import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
 import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;
 import org.apache.commons.compress.utils.IOUtils;
@@ -104,9 +101,9 @@ public class SibaManager
 				gzipOutputStream = new GzipCompressorOutputStream(
 						new BufferedOutputStream(new FileOutputStream(result)));
 				out = new TarArchiveOutputStream(gzipOutputStream);
-				directoryToSave(fileToSave, out, pathLength);
+				SibaUtils.tarDirectoryTree(fileToSave, out, pathLength);
 				out.close();
-				fileWithMD5(result, target + "/" + outputFileNameWithoutExtension + ".tgz.md5");
+				createMD5File(result, target + "/" + outputFileNameWithoutExtension + ".tgz.md5");
 			}
 		}
 		catch (IOException ioExceptionBackup)
@@ -140,7 +137,7 @@ public class SibaManager
 		try
 		{
 			String md5String = SibaUtils.loadMD5Sum(choosenFile);
-			File fileToCheck1 = loadFileToCheck(choosenFile);
+			File fileToCheck1 = SibaUtils.loadFileToCheck(choosenFile);
 			if (StringUtils.equals(md5String, SibaUtils.md5(fileToCheck1)))
 			{
 				result = true;
@@ -162,50 +159,6 @@ public class SibaManager
 		return result;
 	}
 
-	/**
-	 *
-	 * This method generates ArchiveEntry.
-	 *
-	 * @param directory
-	 * @param outputStream
-	 * @param pathLength
-	 * @throws IOException
-	 */
-	public static void directoryToSave(final File directory, final TarArchiveOutputStream outputStream,
-			final int pathLength) throws IOException
-	{
-		for (File file : directory.listFiles())
-		{
-
-			if (file.isDirectory())
-			{
-				if (file.listFiles().length == 0)
-				{
-					TarArchiveEntry tarArchiveEntry = new TarArchiveEntry(file);
-					String pathPartiel = file.getPath().substring(pathLength);
-					tarArchiveEntry.setName(pathPartiel);
-					outputStream.putArchiveEntry(tarArchiveEntry);
-					outputStream.closeArchiveEntry();
-				}
-				else
-				{
-					directoryToSave(file, outputStream, pathLength);
-				}
-
-			}
-			else
-			{
-				TarArchiveEntry tarArchiveEntry = new TarArchiveEntry(file);
-				String pathPartiel = file.getPath().substring(pathLength);
-				tarArchiveEntry.setName(pathPartiel);
-				outputStream.putArchiveEntry(tarArchiveEntry);
-				IOUtils.copy(new FileInputStream(file), outputStream);
-				outputStream.closeArchiveEntry();
-
-			}
-		}
-	}
-
 	/**
 	 *
 	 * This method Generate the file with MD5.
@@ -216,7 +169,7 @@ public class SibaManager
 	 * @throws IOException
 	 * @throws NoSuchAlgorithmException
 	 */
-	public static File fileWithMD5(final File directoryToSave, final String destination)
+	public static File createMD5File(final File directoryToSave, final String destination)
 			throws IOException, NoSuchAlgorithmException
 	{
 		File result;
@@ -225,51 +178,13 @@ public class SibaManager
 		FileWriter fileWriter = new FileWriter(result);
 		fileWriter.write(SibaUtils.md5(directoryToSave));
 		String newLine = System.getProperty("line.separator");
-		fileWriter.append(" " + directoryToSave.getName() + newLine);
+		fileWriter.append(" ");
+		fileWriter.append(directoryToSave.getName());
+		fileWriter.append(newLine);
 		fileWriter.close();
 
 		//
 		return result;
 	}
 
-	/**
-	 *
-	 * @param choosenFile
-	 * @return
-	 * @throws IOException
-	 */
-	public static File loadFileToCheck(final File choosenFile) throws IOException
-	{
-		File result = null;
-		if (choosenFile.exists() && (choosenFile.length() > 32))
-		{
-			FileReader fileReader = new FileReader(choosenFile);
-			// BufferedReader bufferedReader = new BufferedReader(fileReader);
-			// String line = bufferedReader.readLine();
-			char[] fileToCheck = new char[(int) (choosenFile.length()) - 32];
-			fileReader.read();
-			fileReader.skip(32);
-			String fileNameToString = new String();
-			for (int index = 36; index < (choosenFile.length() + 2); index++)
-			{
-				fileToCheck[index - 36] = (char) fileReader.read();
-				fileNameToString = fileNameToString + fileToCheck[index - 36];
-			}
-
-			fileReader.close();
-			if (choosenFile.isAbsolute())
-			{
-				result = new File(choosenFile.getParent() + "/" + fileNameToString);
-			}
-			else
-			{
-				String path = System.getProperty("user.dir");
-				result = new File(path + "/" + fileNameToString);
-			}
-		}
-		//
-
-		return result;
-	}
-
 }
diff --git a/src/org/dclermonte/siba/model/SibaUtils.java b/src/org/dclermonte/siba/model/SibaUtils.java
index bebd394..9de0f9b 100644
--- a/src/org/dclermonte/siba/model/SibaUtils.java
+++ b/src/org/dclermonte/siba/model/SibaUtils.java
@@ -26,10 +26,52 @@ import java.io.IOException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 
+import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
+import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
 import org.apache.commons.compress.utils.IOUtils;
 
 public class SibaUtils
 {
+	/**
+	 *
+	 * @param choosenFile
+	 * @return
+	 * @throws IOException
+	 */
+	public static File loadFileToCheck(final File choosenFile) throws IOException
+	{
+		File result = null;
+		if (choosenFile.exists() && (choosenFile.length() > 32))
+		{
+			FileReader fileReader = new FileReader(choosenFile);
+			// BufferedReader bufferedReader = new BufferedReader(fileReader);
+			// String line = bufferedReader.readLine();
+			char[] fileToCheck = new char[(int) (choosenFile.length()) - 32];
+			fileReader.read();
+			fileReader.skip(32);
+			String fileNameToString = new String();
+			for (int index = 36; index < (choosenFile.length() + 2); index++)
+			{
+				fileToCheck[index - 36] = (char) fileReader.read();
+				fileNameToString = fileNameToString + fileToCheck[index - 36];
+			}
+
+			fileReader.close();
+			if (choosenFile.isAbsolute())
+			{
+				result = new File(choosenFile.getParent() + "/" + fileNameToString);
+			}
+			else
+			{
+				String path = System.getProperty("user.dir");
+				result = new File(path + "/" + fileNameToString);
+			}
+		}
+		//
+
+		return result;
+	}
+
 	/**
 	 *
 	 * @param choosenFile
@@ -108,4 +150,48 @@ public class SibaUtils
 		//
 		return result;
 	}
+
+	/**
+	 *
+	 * This method generates ArchiveEntry.
+	 *
+	 * @param directory
+	 * @param outputStream
+	 * @param pathLength
+	 * @throws IOException
+	 */
+	public static void tarDirectoryTree(final File directory, final TarArchiveOutputStream outputStream,
+			final int pathLength) throws IOException
+	{
+		for (File file : directory.listFiles())
+		{
+
+			if (file.isDirectory())
+			{
+				if (file.listFiles().length == 0)
+				{
+					TarArchiveEntry tarArchiveEntry = new TarArchiveEntry(file);
+					String pathPartiel = file.getPath().substring(pathLength);
+					tarArchiveEntry.setName(pathPartiel);
+					outputStream.putArchiveEntry(tarArchiveEntry);
+					outputStream.closeArchiveEntry();
+				}
+				else
+				{
+					tarDirectoryTree(file, outputStream, pathLength);
+				}
+
+			}
+			else
+			{
+				TarArchiveEntry tarArchiveEntry = new TarArchiveEntry(file);
+				String pathPartiel = file.getPath().substring(pathLength);
+				tarArchiveEntry.setName(pathPartiel);
+				outputStream.putArchiveEntry(tarArchiveEntry);
+				IOUtils.copy(new FileInputStream(file), outputStream);
+				outputStream.closeArchiveEntry();
+
+			}
+		}
+	}
 }