diff --git a/L2J_Mobius_CT_2.6_HighFive/dist/game/data/stats/skills/00300-00399.xml b/L2J_Mobius_CT_2.6_HighFive/dist/game/data/stats/skills/00300-00399.xml
index 8351707f62..32d1657af3 100644
--- a/L2J_Mobius_CT_2.6_HighFive/dist/game/data/stats/skills/00300-00399.xml
+++ b/L2J_Mobius_CT_2.6_HighFive/dist/game/data/stats/skills/00300-00399.xml
@@ -1050,7 +1050,7 @@
 		<set name="targetType" val="SELF" />
 		<for>
 			<effect name="Buff">
-				<add stat="skillCritical" val="1" /> <!-- STR -->
+				<add stat="skillMastery" val="1" /> <!-- STR -->
 			</effect>
 		</for>
 	</skill>
@@ -1062,7 +1062,7 @@
 		<set name="targetType" val="SELF" />
 		<for>
 			<effect name="Buff">
-				<add stat="skillCritical" val="4" /> <!-- INT -->
+				<add stat="skillMastery" val="4" /> <!-- INT -->
 			</effect>
 		</for>
 	</skill>
@@ -1102,7 +1102,7 @@
 		<for>
 			<effect name="MpConsumePerLevel" ticks="5">
 				<param power="2" />
-				<mul stat="skillCriticalProbability" val="11" />
+				<mul stat="skillMasteryRate" val="11" />
 			</effect>
 		</for>
 	</skill>
diff --git a/L2J_Mobius_CT_2.6_HighFive/dist/game/data/xsd/skills.xsd b/L2J_Mobius_CT_2.6_HighFive/dist/game/data/xsd/skills.xsd
index fdd14351ff..b9f61b3452 100644
--- a/L2J_Mobius_CT_2.6_HighFive/dist/game/data/xsd/skills.xsd
+++ b/L2J_Mobius_CT_2.6_HighFive/dist/game/data/xsd/skills.xsd
@@ -433,8 +433,8 @@
 			<xs:enumeration value="shieldDefAngle" />
 			<xs:enumeration value="reflectSkillMagic" />
 			<xs:enumeration value="reflectSkillPhysic" />
-			<xs:enumeration value="skillCritical" />
-			<xs:enumeration value="skillCriticalProbability" />
+			<xs:enumeration value="skillMastery" />
+			<xs:enumeration value="skillMasteryRate" />
 			<xs:enumeration value="privateBuyLimit" />
 			<xs:enumeration value="privateSellLimit" />
 			<xs:enumeration value="inventoryLimit" />
diff --git a/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/stats/Formulas.java b/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/stats/Formulas.java
index f582ba1153..4f90747bed 100644
--- a/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/stats/Formulas.java
+++ b/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/stats/Formulas.java
@@ -1580,7 +1580,7 @@ public class Formulas
 			return false;
 		}
 		
-		final int val = (int) actor.getStat().calcStat(Stat.SKILL_CRITICAL, 0, null, null);
+		final int val = (int) actor.getStat().calcStat(Stat.SKILL_MASTERY, 0, null, null);
 		if (val == 0)
 		{
 			return false;
@@ -1602,7 +1602,7 @@ public class Formulas
 					break;
 				}
 			}
-			initVal *= actor.getStat().calcStat(Stat.SKILL_CRITICAL_PROBABILITY, 1, null, null);
+			initVal *= actor.getStat().calcStat(Stat.SKILL_MASTERY_RATE, 1, null, null);
 			return (Rnd.get(100) < initVal);
 		}
 		
diff --git a/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/stats/Stat.java b/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/stats/Stat.java
index 9a696208e0..1260e34858 100644
--- a/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/stats/Stat.java
+++ b/L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/stats/Stat.java
@@ -175,8 +175,8 @@ public enum Stat
 	SHIELD_DEFENCE_ANGLE("shieldDefAngle"),
 	
 	// Skill mastery
-	SKILL_CRITICAL("skillCritical"),
-	SKILL_CRITICAL_PROBABILITY("skillCriticalProbability"),
+	SKILL_MASTERY("skillMastery"),
+	SKILL_MASTERY_RATE("skillMasteryRate"),
 	
 	// Vitality
 	VITALITY_CONSUME_RATE("vitalityConsumeRate"),