diff --git a/Maple2.Server.Game/Manager/MasteryManager.cs b/Maple2.Server.Game/Manager/MasteryManager.cs
index 7c772bb4d..b71c01d25 100644
--- a/Maple2.Server.Game/Manager/MasteryManager.cs
+++ b/Maple2.Server.Game/Manager/MasteryManager.cs
@@ -1,4 +1,5 @@
-using System.Numerics;
+using System.Diagnostics;
+using System.Numerics;
 using Maple2.Model.Enum;
 using Maple2.Model.Error;
 using Maple2.Model.Game;
@@ -80,7 +81,11 @@ public int this[MasteryType type] {
             session.Send(MasteryPacket.UpdateMastery(type, session.Mastery[type]));
             int currentLevel = GetLevel(type);
             if (startLevel < currentLevel || startValue == 0) {
-                session.ConditionUpdate(ConditionType.mastery_grade, codeLong: (int) type);
+                if (type == MasteryType.Fishing) {
+                    session.ConditionUpdate(ConditionType.fisher_grade, codeLong: currentLevel);
+                } else {
+                    session.ConditionUpdate(ConditionType.mastery_grade, codeLong: (int) type);
+                }
             }
             if (startLevel > currentLevel) {
                 session.ConditionUpdate(ConditionType.set_mastery_grade, codeLong: (int) type);
diff --git a/Maple2.Server.Game/Util/ConditionUtil.cs b/Maple2.Server.Game/Util/ConditionUtil.cs
index 40483c17f..fb753fb6c 100644
--- a/Maple2.Server.Game/Util/ConditionUtil.cs
+++ b/Maple2.Server.Game/Util/ConditionUtil.cs
@@ -59,6 +59,7 @@ private static bool CheckCode(this ConditionMetadata.Parameters code, GameSessio
                 break;
             case ConditionType.map:
             case ConditionType.fish:
+            case ConditionType.fisher_grade:
             case ConditionType.mastery_grade:
             case ConditionType.set_mastery_grade:
             case ConditionType.item_add:
@@ -265,6 +266,7 @@ private static bool CheckTarget(this ConditionMetadata.Parameters target, GameSe
             case ConditionType.fish_fail:
             case ConditionType.fish_collect:
             case ConditionType.fish_goldmedal:
+            case ConditionType.fisher_grade:
             case ConditionType.mastery_grade:
             case ConditionType.set_mastery_grade:
             case ConditionType.music_play_grade: