diff --git a/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/siege/Siege.java b/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/siege/Siege.java
index 78ebea6748..579e7c379d 100644
--- a/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/siege/Siege.java
+++ b/L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/siege/Siege.java
@@ -1174,6 +1174,11 @@ public class Siege implements Siegable
 		{
 			player.sendPacket(SystemMessageId.NO_MORE_REGISTRATIONS_MAY_BE_ACCEPTED_FOR_THE_DEFENDER_SIDE);
 		}
+		// In Classic, only lvl 3-4 clans are able to participate in the Gludio Castle Siege.
+		else if (((_castle.getResidenceId() == 1) && (player.getClan().getLevel() >= 5)))
+		{
+			player.sendPacket(SystemMessageId.ONLY_LEVEL_3_4_CLANS_CAN_PARTICIPATE_IN_CASTLE_SIEGE);
+		}
 		else
 		{
 			return true;
diff --git a/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/siege/Siege.java b/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/siege/Siege.java
index 78ebea6748..579e7c379d 100644
--- a/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/siege/Siege.java
+++ b/L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/siege/Siege.java
@@ -1174,6 +1174,11 @@ public class Siege implements Siegable
 		{
 			player.sendPacket(SystemMessageId.NO_MORE_REGISTRATIONS_MAY_BE_ACCEPTED_FOR_THE_DEFENDER_SIDE);
 		}
+		// In Classic, only lvl 3-4 clans are able to participate in the Gludio Castle Siege.
+		else if (((_castle.getResidenceId() == 1) && (player.getClan().getLevel() >= 5)))
+		{
+			player.sendPacket(SystemMessageId.ONLY_LEVEL_3_4_CLANS_CAN_PARTICIPATE_IN_CASTLE_SIEGE);
+		}
 		else
 		{
 			return true;
diff --git a/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/siege/Siege.java b/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/siege/Siege.java
index 78ebea6748..579e7c379d 100644
--- a/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/siege/Siege.java
+++ b/L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/siege/Siege.java
@@ -1174,6 +1174,11 @@ public class Siege implements Siegable
 		{
 			player.sendPacket(SystemMessageId.NO_MORE_REGISTRATIONS_MAY_BE_ACCEPTED_FOR_THE_DEFENDER_SIDE);
 		}
+		// In Classic, only lvl 3-4 clans are able to participate in the Gludio Castle Siege.
+		else if (((_castle.getResidenceId() == 1) && (player.getClan().getLevel() >= 5)))
+		{
+			player.sendPacket(SystemMessageId.ONLY_LEVEL_3_4_CLANS_CAN_PARTICIPATE_IN_CASTLE_SIEGE);
+		}
 		else
 		{
 			return true;
diff --git a/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/siege/Siege.java b/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/siege/Siege.java
index 78ebea6748..579e7c379d 100644
--- a/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/siege/Siege.java
+++ b/L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/siege/Siege.java
@@ -1174,6 +1174,11 @@ public class Siege implements Siegable
 		{
 			player.sendPacket(SystemMessageId.NO_MORE_REGISTRATIONS_MAY_BE_ACCEPTED_FOR_THE_DEFENDER_SIDE);
 		}
+		// In Classic, only lvl 3-4 clans are able to participate in the Gludio Castle Siege.
+		else if (((_castle.getResidenceId() == 1) && (player.getClan().getLevel() >= 5)))
+		{
+			player.sendPacket(SystemMessageId.ONLY_LEVEL_3_4_CLANS_CAN_PARTICIPATE_IN_CASTLE_SIEGE);
+		}
 		else
 		{
 			return true;
diff --git a/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/siege/Siege.java b/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/siege/Siege.java
index 78ebea6748..579e7c379d 100644
--- a/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/siege/Siege.java
+++ b/L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/siege/Siege.java
@@ -1174,6 +1174,11 @@ public class Siege implements Siegable
 		{
 			player.sendPacket(SystemMessageId.NO_MORE_REGISTRATIONS_MAY_BE_ACCEPTED_FOR_THE_DEFENDER_SIDE);
 		}
+		// In Classic, only lvl 3-4 clans are able to participate in the Gludio Castle Siege.
+		else if (((_castle.getResidenceId() == 1) && (player.getClan().getLevel() >= 5)))
+		{
+			player.sendPacket(SystemMessageId.ONLY_LEVEL_3_4_CLANS_CAN_PARTICIPATE_IN_CASTLE_SIEGE);
+		}
 		else
 		{
 			return true;
diff --git a/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/siege/Siege.java b/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/siege/Siege.java
index 78ebea6748..579e7c379d 100644
--- a/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/siege/Siege.java
+++ b/L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/siege/Siege.java
@@ -1174,6 +1174,11 @@ public class Siege implements Siegable
 		{
 			player.sendPacket(SystemMessageId.NO_MORE_REGISTRATIONS_MAY_BE_ACCEPTED_FOR_THE_DEFENDER_SIDE);
 		}
+		// In Classic, only lvl 3-4 clans are able to participate in the Gludio Castle Siege.
+		else if (((_castle.getResidenceId() == 1) && (player.getClan().getLevel() >= 5)))
+		{
+			player.sendPacket(SystemMessageId.ONLY_LEVEL_3_4_CLANS_CAN_PARTICIPATE_IN_CASTLE_SIEGE);
+		}
 		else
 		{
 			return true;
diff --git a/L2J_Mobius_Essence_4.0_DwellingOfSpirits/java/org/l2jmobius/gameserver/model/siege/Siege.java b/L2J_Mobius_Essence_4.0_DwellingOfSpirits/java/org/l2jmobius/gameserver/model/siege/Siege.java
index 1839b6539e..6476cecf98 100644
--- a/L2J_Mobius_Essence_4.0_DwellingOfSpirits/java/org/l2jmobius/gameserver/model/siege/Siege.java
+++ b/L2J_Mobius_Essence_4.0_DwellingOfSpirits/java/org/l2jmobius/gameserver/model/siege/Siege.java
@@ -1174,6 +1174,11 @@ public class Siege implements Siegable
 		{
 			player.sendPacket(SystemMessageId.NO_MORE_REGISTRATIONS_MAY_BE_ACCEPTED_FOR_THE_DEFENDER_SIDE);
 		}
+		// In Classic, only lvl 3-4 clans are able to participate in the Gludio Castle Siege.
+		else if (((_castle.getResidenceId() == 1) && (player.getClan().getLevel() >= 5)))
+		{
+			player.sendPacket(SystemMessageId.ONLY_LEVEL_3_4_CLANS_CAN_PARTICIPATE_IN_CASTLE_SIEGE);
+		}
 		else
 		{
 			return true;
diff --git a/L2J_Mobius_Essence_5.0_Sylph/java/org/l2jmobius/gameserver/model/siege/Siege.java b/L2J_Mobius_Essence_5.0_Sylph/java/org/l2jmobius/gameserver/model/siege/Siege.java
index 1839b6539e..6476cecf98 100644
--- a/L2J_Mobius_Essence_5.0_Sylph/java/org/l2jmobius/gameserver/model/siege/Siege.java
+++ b/L2J_Mobius_Essence_5.0_Sylph/java/org/l2jmobius/gameserver/model/siege/Siege.java
@@ -1174,6 +1174,11 @@ public class Siege implements Siegable
 		{
 			player.sendPacket(SystemMessageId.NO_MORE_REGISTRATIONS_MAY_BE_ACCEPTED_FOR_THE_DEFENDER_SIDE);
 		}
+		// In Classic, only lvl 3-4 clans are able to participate in the Gludio Castle Siege.
+		else if (((_castle.getResidenceId() == 1) && (player.getClan().getLevel() >= 5)))
+		{
+			player.sendPacket(SystemMessageId.ONLY_LEVEL_3_4_CLANS_CAN_PARTICIPATE_IN_CASTLE_SIEGE);
+		}
 		else
 		{
 			return true;
diff --git a/L2J_Mobius_Essence_5.5_FrostLord/java/org/l2jmobius/gameserver/model/siege/Siege.java b/L2J_Mobius_Essence_5.5_FrostLord/java/org/l2jmobius/gameserver/model/siege/Siege.java
index 1839b6539e..6476cecf98 100644
--- a/L2J_Mobius_Essence_5.5_FrostLord/java/org/l2jmobius/gameserver/model/siege/Siege.java
+++ b/L2J_Mobius_Essence_5.5_FrostLord/java/org/l2jmobius/gameserver/model/siege/Siege.java
@@ -1174,6 +1174,11 @@ public class Siege implements Siegable
 		{
 			player.sendPacket(SystemMessageId.NO_MORE_REGISTRATIONS_MAY_BE_ACCEPTED_FOR_THE_DEFENDER_SIDE);
 		}
+		// In Classic, only lvl 3-4 clans are able to participate in the Gludio Castle Siege.
+		else if (((_castle.getResidenceId() == 1) && (player.getClan().getLevel() >= 5)))
+		{
+			player.sendPacket(SystemMessageId.ONLY_LEVEL_3_4_CLANS_CAN_PARTICIPATE_IN_CASTLE_SIEGE);
+		}
 		else
 		{
 			return true;