diff --git a/ml_prm/ModUi.cs b/ml_prm/ModUi.cs
index c7c11d7..52f7790 100644
--- a/ml_prm/ModUi.cs
+++ b/ml_prm/ModUi.cs
@@ -321,7 +321,7 @@ namespace ml_prm
             ms_fallLimitSlider.SetSliderValue(9.899494f);
 
             OnSliderUpdate(UiIndex.ImpactVolume, 100f);
-            ms_impactVolumeSlider.SetSliderValue(100f);
+            ms_impactVolumeSlider.SetSliderValue(25f);
         }
 
         static void OnHotkeyKeyChanged(UnityEngine.KeyCode p_keyCode)
diff --git a/ml_prm/Settings.cs b/ml_prm/Settings.cs
index 80aafbb..f35a331 100644
--- a/ml_prm/Settings.cs
+++ b/ml_prm/Settings.cs
@@ -57,7 +57,7 @@ namespace ml_prm
         public static float FallLimit { get; private set; } = 9.899494f;
         public static bool GestureGrab { get; private set; } = false;
         public static bool ImpactSounds { get; private set; } = true;
-        public static float ImpactVolume { get; private set; } = 1f;
+        public static float ImpactVolume { get; private set; } = 0.25f;
 
         public static readonly SettingEvent<bool> OnHotkeyChanged = new SettingEvent<bool>();
         public static readonly SettingEvent<KeyCode> OnHotkeyKeyChanged = new SettingEvent<KeyCode>();