diff --git a/index.php b/index.php
index 2cd0164..5f1405e 100644
--- a/index.php
+++ b/index.php
@@ -1887,7 +1887,7 @@ $projectImageUrl = $_SERVER['PROJECT_IMAGE_URL'] ?? '';
                                         </div>
                                          <div class="col-md-6 mb-3">
                                             <label class="form-label text-uppercase fw-bold mb-2" style="font-size: 0.7em; color: var(--text-muted);">Volume de sortie</label>
-                                            <input type="range" name="voice_output_volume" id="voice_output_volume" class="form-range" min="0" max="2" step="0.01" value="1.0">
+                                            <input type="range" name="voice_output_volume" id="voice_output_volume" class="form-range" min="0" max="1" step="0.01" value="1.0">
                                             <script>document.getElementById('voice_output_volume').value = localStorage.getItem('voice_output_volume') || 1.0;</script>
                                         </div>
                                     </div>