diff --git a/Assets/Scripts/Gameplay/UI/IPConnectionWindow.cs b/Assets/Scripts/Gameplay/UI/IPConnectionWindow.cs
index 8e802727..fc26a1ae 100644
--- a/Assets/Scripts/Gameplay/UI/IPConnectionWindow.cs
+++ b/Assets/Scripts/Gameplay/UI/IPConnectionWindow.cs
@@ -54,8 +54,11 @@ namespace Unity.BossRoom.Gameplay.UI
             m_CanvasGroup.blocksRaycasts = true;
         }
 
-        void Hide()
-        {
+        void Hide( ) {
+            if ( !m_CanvasGroup ) {
+                Debug.LogError( "(!) IPConnectionWindow :: CanvasGroup is not set" ) ;
+                return ;
+            }
             m_CanvasGroup.alpha = 0f;
             m_CanvasGroup.blocksRaycasts = false;
         }