diff --git a/src/main/java/es/kauron/jstudy/model/TestItem.java b/src/main/java/es/kauron/jstudy/model/TestItem.java
index 88fa56f..0a2a53d 100644
--- a/src/main/java/es/kauron/jstudy/model/TestItem.java
+++ b/src/main/java/es/kauron/jstudy/model/TestItem.java
@@ -4,6 +4,7 @@ import javafx.beans.property.SimpleStringProperty;
 import javafx.beans.property.StringProperty;
 
 import java.io.*;
+import java.nio.charset.Charset;
 import java.util.ArrayList;
 import java.util.InputMismatchException;
 import java.util.List;
@@ -53,7 +54,8 @@ public class TestItem {
 
     public static void saveTo(File file, List<TestItem> data) {
         try {
-            OutputStreamWriter writer = new FileWriter(file);
+            OutputStreamWriter writer = new OutputStreamWriter(
+                    new FileOutputStream(file), Charset.forName("UTF-8").newEncoder());
             for (TestItem item : data) {
                 writer.write(item.getQuestion() + "::" + item.getAnswer() + "\n");
             }