diff --git a/L2J_Mobius_1.0_Ertheia/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java b/L2J_Mobius_1.0_Ertheia/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
index 57c95bd40e..78995bb2b1 100644
--- a/L2J_Mobius_1.0_Ertheia/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
+++ b/L2J_Mobius_1.0_Ertheia/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
@@ -575,7 +575,7 @@ public class L2AttackableAI extends L2CharacterAI implements Runnable
 	{
 		final L2Attackable npc = getActiveChar();
 		
-		if (npc.isCastingNow())
+		if ((npc == null) || npc.isCastingNow())
 		{
 			return;
 		}
diff --git a/L2J_Mobius_2.5_Underground/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java b/L2J_Mobius_2.5_Underground/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
index 57c95bd40e..78995bb2b1 100644
--- a/L2J_Mobius_2.5_Underground/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
+++ b/L2J_Mobius_2.5_Underground/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
@@ -575,7 +575,7 @@ public class L2AttackableAI extends L2CharacterAI implements Runnable
 	{
 		final L2Attackable npc = getActiveChar();
 		
-		if (npc.isCastingNow())
+		if ((npc == null) || npc.isCastingNow())
 		{
 			return;
 		}
diff --git a/L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java b/L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
index 57c95bd40e..78995bb2b1 100644
--- a/L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
+++ b/L2J_Mobius_3.0_Helios/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
@@ -575,7 +575,7 @@ public class L2AttackableAI extends L2CharacterAI implements Runnable
 	{
 		final L2Attackable npc = getActiveChar();
 		
-		if (npc.isCastingNow())
+		if ((npc == null) || npc.isCastingNow())
 		{
 			return;
 		}
diff --git a/L2J_Mobius_CT_2.6_HighFive/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java b/L2J_Mobius_CT_2.6_HighFive/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
index d03b48e301..e121f2b667 100644
--- a/L2J_Mobius_CT_2.6_HighFive/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
+++ b/L2J_Mobius_CT_2.6_HighFive/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
@@ -695,7 +695,7 @@ public class L2AttackableAI extends L2CharacterAI implements Runnable
 	protected void thinkAttack()
 	{
 		final L2Attackable npc = getActiveChar();
-		if (npc.isCastingNow())
+		if ((npc == null) || npc.isCastingNow())
 		{
 			return;
 		}
diff --git a/L2J_Mobius_Classic_2.0_Saviors/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java b/L2J_Mobius_Classic_2.0_Saviors/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
index 57c95bd40e..78995bb2b1 100644
--- a/L2J_Mobius_Classic_2.0_Saviors/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
+++ b/L2J_Mobius_Classic_2.0_Saviors/java/com/l2jmobius/gameserver/ai/L2AttackableAI.java
@@ -575,7 +575,7 @@ public class L2AttackableAI extends L2CharacterAI implements Runnable
 	{
 		final L2Attackable npc = getActiveChar();
 		
-		if (npc.isCastingNow())
+		if ((npc == null) || npc.isCastingNow())
 		{
 			return;
 		}