diff --git a/index.js b/index.js
index 63721ad..6acb643 100644
--- a/index.js
+++ b/index.js
@@ -54,6 +54,21 @@ document.addEventListener('DOMContentLoaded', function () {
                 sm.style.display = 'none';
             };
         }
+        
+        // Sleep Timer wirklich ausschalten
+        const offSleepBtn = document.getElementById('off-sleep-timer-modal');
+        if (offSleepBtn) {
+            offSleepBtn.onclick = () => {
+                if (window.SleepTimer) {
+                    window.SleepTimer.clear(); // Stoppt den Timeout und resettet die UI
+                }
+                const sm = document.getElementById('sleep-timer-modal');
+                if (sm) {
+                    sm.classList.add('hidden');
+                    sm.style.display = 'none';
+                }
+            };
+        }
 
         // Zeit-Optionen im Sleep Timer
         document.querySelectorAll('.time-option').forEach(btn => {