diff --git a/static/js/script.js b/static/js/script.js
index fc8d3b1..4a39e01 100644
--- a/static/js/script.js
+++ b/static/js/script.js
@@ -12,8 +12,7 @@ document.addEventListener('DOMContentLoaded', function() {
     const totalElement = document.getElementById('total');
     const wpmElement = document.getElementById('wpm');
     
-    // Aktuelle Textdaten
-    let currentText = window.initialText;
+    // Aktuelle Textdaten (verwende nur lines, entferne currentText)
     let lines = window.lines;
     let currentLineIndex = window.currentLineIndex;
     let startTime = null;
@@ -66,7 +65,8 @@ document.addEventListener('DOMContentLoaded', function() {
     function updateTimer() {
         if (startTime) {
             const userValue = userInput.value;
-            updateStatistics(userValue, currentText);
+            const currentLine = lines[currentLineIndex];
+            updateStatistics(userValue, currentLine);
         }
     }
     
@@ -95,8 +95,8 @@ document.addEventListener('DOMContentLoaded', function() {
                 if (data.error) {
                     alert('Fehler: ' + data.error);
                 } else {
-                    currentText = data.text;
-                    lines = currentText.split('\n');
+                    // Verwende nur lines, entferne currentText
+                    lines = data.text.split('\n');
                     currentLineIndex = 0;
                     updateLineDisplay();
                     document.getElementById('lesson-title').textContent = data.title;
@@ -126,8 +126,8 @@ document.addEventListener('DOMContentLoaded', function() {
         })
         .then(response => response.json())
         .then(data => {
-            currentText = data.text;
-            lines = currentText.split('\n');
+            // Verwende nur lines, entferne currentText
+            lines = data.text.split('\n');
             currentLineIndex = 0;
             updateLineDisplay();
             // Aktualisiere den Lektionstitel