diff --git a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/hostedbymap/DownloadCSV.java b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/hostedbymap/DownloadCSV.java
index c8329c99c..be35d31f8 100644
--- a/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/hostedbymap/DownloadCSV.java
+++ b/dhp-workflows/dhp-graph-mapper/src/main/java/eu/dnetlib/dhp/oa/graph/hostedbymap/DownloadCSV.java
@@ -2,9 +2,12 @@
 package eu.dnetlib.dhp.oa.graph.hostedbymap;
 
 import java.io.*;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.Objects;
 import java.util.Optional;
 
+import eu.dnetlib.dhp.common.collection.CollectorException;
 import org.apache.commons.io.IOUtils;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.FSDataOutputStream;
@@ -56,30 +59,37 @@ public class DownloadCSV {
 			.orElse(DEFAULT_DELIMITER);
 		log.info("delimiter {}", delimiter);
 
-		final HttpConnector2 connector2 = new HttpConnector2();
-
 		Configuration conf = new Configuration();
 		conf.set("fs.defaultFS", hdfsNameNode);
 
 		FileSystem fileSystem = FileSystem.get(conf);
+
+		new DownloadCSV().doDownload(fileURL, workingPath, outputFile, classForName, delimiter, fileSystem);
+
+	}
+
+	protected void doDownload(String fileURL, String workingPath, String outputFile, String classForName, char delimiter, FileSystem fs)
+			throws IOException, ClassNotFoundException, CollectorException {
+
+		final HttpConnector2 connector2 = new HttpConnector2();
+
 		final Path path = new Path(workingPath + "/replaced.csv");
 
 		try (BufferedReader in = new BufferedReader(
 			new InputStreamReader(connector2.getInputSourceAsStream(fileURL)))) {
 
-			try (FSDataOutputStream fos = fileSystem.create(path, true)) {
+			try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(fs.create(path, true), Charset.defaultCharset()))) {
 				String line;
 				while ((line = in.readLine()) != null) {
-					fos.writeUTF(line.replace("\\\"", "\""));
-					fos.writeUTF("\n");
+					writer.write(line.replace("\\\"", "\""));
+					writer.newLine();
 				}
 			}
 		}
 
-		try (InputStreamReader reader = new InputStreamReader(fileSystem.open(path))) {
-			GetCSV.getCsv(fileSystem, reader, outputFile, classForName, delimiter);
+		try (InputStreamReader reader = new InputStreamReader(fs.open(path))) {
+			GetCSV.getCsv(fs, reader, outputFile, classForName, delimiter);
 		}
-
 	}
 
 }
diff --git a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/hostedbymap/DownloadCsvTest.java b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/hostedbymap/DownloadCsvTest.java
index b93320e1a..7b02025fb 100644
--- a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/hostedbymap/DownloadCsvTest.java
+++ b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/hostedbymap/DownloadCsvTest.java
@@ -39,14 +39,16 @@ public class DownloadCsvTest {
 
         String fileURL = "https://pub.uni-bielefeld.de/download/2944717/2944718/issn_gold_oa_version_4.csv";
 
-        GetCSV
-                .getCsv(
-                        fs, new BufferedReader(
-                                new InputStreamReader(new HttpConnector2().getInputSourceAsStream(fileURL))),
-                        workingDir + "/programme",
-                        UnibiGoldModel.class.getName());
+        final String outputFile = workingDir + "/unibi_gold.json";
+        new DownloadCSV().doDownload(
+                fileURL,
+                workingDir + "/unibi_gold",
+                outputFile,
+                UnibiGoldModel.class.getName(),
+                ',',
+                fs);
 
-        BufferedReader in = new BufferedReader(new InputStreamReader(fs.open(new Path(workingDir + "/programme"))));
+        BufferedReader in = new BufferedReader(new InputStreamReader(fs.open(new Path(outputFile))));
 
         String line;
         int count = 0;
@@ -82,24 +84,16 @@ public class DownloadCsvTest {
 
         String fileURL = "https://doaj.org/csv";
 
-        try (BufferedReader in = new BufferedReader(
-                new InputStreamReader(new HttpConnector2().getInputSourceAsStream(fileURL)))) {
-            try (PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter("/tmp/DOAJ_1.csv")))) {
-                String line;
-                while ((line = in.readLine()) != null) {
-                    writer.println(line.replace("\\\"", "\""));
-                }
-            }
-        }
+        final String outputFile = workingDir + "/doaj.json";
+        new DownloadCSV().doDownload(
+                fileURL,
+                workingDir + "/doaj",
+                outputFile,
+                DOAJModel.class.getName(),
+                ',',
+                fs);
 
-        GetCSV
-                .getCsv(
-                        fs, new BufferedReader(
-                                new FileReader("/tmp/DOAJ_1.csv")),
-                        workingDir + "/programme",
-                        DOAJModel.class.getName());
-
-        BufferedReader in = new BufferedReader(new InputStreamReader(fs.open(new Path(workingDir + "/programme"))));
+        BufferedReader in = new BufferedReader(new InputStreamReader(fs.open(new Path(outputFile))));
 
         String line;
         int count = 0;