diff --git a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java
index 8a47380b43..9b624ebc98 100644
--- a/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_CT_0_Interlude/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -1887,7 +1887,7 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 				
 				// Create a task MagicUseTask to launch the MagicSkill at the end of the casting time (skillTime)
 				// For client animation reasons (party buffs especially) 400 ms before!
-				_skillCast2 = ThreadPool.schedule(mut, skillTime - 400);
+				_skillCast2 = ThreadPool.schedule(mut, Math.max(0, skillTime - 400));
 			}
 			else
 			{
@@ -1900,7 +1900,7 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 				
 				// Create a task MagicUseTask to launch the MagicSkill at the end of the casting time (skillTime)
 				// For client animation reasons (party buffs especially) 400 ms before!
-				_skillCast = ThreadPool.schedule(mut, skillTime - 400);
+				_skillCast = ThreadPool.schedule(mut, Math.max(0, skillTime - 400));
 			}
 		}
 		else
diff --git a/L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/actor/Creature.java
index 5dc71532ab..46ffe63914 100644
--- a/L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -2047,7 +2047,7 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 				
 				// Create a task MagicUseTask to launch the MagicSkill at the end of the casting time (skillTime)
 				// For client animation reasons (party buffs especially) 400 ms before!
-				_skillCast2 = ThreadPool.schedule(mut, skillTime - 400);
+				_skillCast2 = ThreadPool.schedule(mut, Math.max(0, skillTime - 400));
 			}
 			else
 			{
@@ -2060,7 +2060,7 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 				
 				// Create a task MagicUseTask to launch the MagicSkill at the end of the casting time (skillTime)
 				// For client animation reasons (party buffs especially) 400 ms before!
-				_skillCast = ThreadPool.schedule(mut, skillTime - 400);
+				_skillCast = ThreadPool.schedule(mut, Math.max(0, skillTime - 400));
 			}
 		}
 		else
diff --git a/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/actor/Creature.java b/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/actor/Creature.java
index cc3bc5df8e..272d1d052b 100644
--- a/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/actor/Creature.java
+++ b/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/actor/Creature.java
@@ -2049,7 +2049,7 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 				
 				// Create a task MagicUseTask to launch the MagicSkill at the end of the casting time (skillTime)
 				// For client animation reasons (party buffs especially) 400 ms before!
-				_skillCast2 = ThreadPool.schedule(mut, skillTime - 400);
+				_skillCast2 = ThreadPool.schedule(mut, Math.max(0, skillTime - 400));
 			}
 			else
 			{
@@ -2062,7 +2062,7 @@ public abstract class Creature extends WorldObject implements ISkillsHolder, IDe
 				
 				// Create a task MagicUseTask to launch the MagicSkill at the end of the casting time (skillTime)
 				// For client animation reasons (party buffs especially) 400 ms before!
-				_skillCast = ThreadPool.schedule(mut, skillTime - 400);
+				_skillCast = ThreadPool.schedule(mut, Math.max(0, skillTime - 400));
 			}
 		}
 		else