From 6b58c18520233e5f35c425639080996522991cd4 Mon Sep 17 00:00:00 2001
From: LevelX2 <ludwig.hirth@online.de>
Date: Wed, 26 Oct 2016 22:53:39 +0200
Subject: [PATCH] * Fixed a game locking problem with the day/night button of
 transformable cards (fixes #2503).

---
 .../src/main/java/org/mage/card/arcane/CardPanel.java       | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Mage.Client/src/main/java/org/mage/card/arcane/CardPanel.java b/Mage.Client/src/main/java/org/mage/card/arcane/CardPanel.java
index 9acd9c8228e..a26d25c7cac 100644
--- a/Mage.Client/src/main/java/org/mage/card/arcane/CardPanel.java
+++ b/Mage.Client/src/main/java/org/mage/card/arcane/CardPanel.java
@@ -564,8 +564,10 @@ public abstract class CardPanel extends MagePermanent implements MouseListener,
             } else {
                 transformIcon = ImageManagerImpl.getInstance().getDayImage();
             }
-            dayNightButton.setVisible(!isPermanent);
-            dayNightButton.setIcon(new ImageIcon(transformIcon));
+            if (dayNightButton != null) {
+                dayNightButton.setVisible(!isPermanent);
+                dayNightButton.setIcon(new ImageIcon(transformIcon));
+            }
         }
     }