diff --git a/src/main/java/es/kauron/jstudy/controller/TestController.java b/src/main/java/es/kauron/jstudy/controller/TestController.java
index 70c0f75..98f5122 100644
--- a/src/main/java/es/kauron/jstudy/controller/TestController.java
+++ b/src/main/java/es/kauron/jstudy/controller/TestController.java
@@ -26,6 +26,7 @@ public class TestController implements Initializable {
 
     private List<TestItem> list;
     private int total, current;
+    private int done = 0, errors = 0;
 
     @Override
     public void initialize(URL url, ResourceBundle resourceBundle) {
@@ -50,11 +51,13 @@ public class TestController implements Initializable {
         correctAnswer.setVisible(!right);
         correctLabel.setVisible(!right);
 
+        if (!right) errors++;
+
         // Remove the question from the pool if the question was correctly answered or there is no repetition
         if (right || !AppConfig.repeatWrong) {
             list.remove(current);
-            progress.setProgress(progress.getProgress() + 1.0/total);
-            progressLabel.setText((int) (progress.getProgress() * total) + "/" + total);
+            progress.setProgress(++done/(double)total);
+            progressLabel.setText(done + "/" + total);
             if (list.size() == 0) {
                 answer.setText("");
                 answer.setDisable(true);