diff --git a/PKHeX.Core/Legality/Encounters/Data/Encounters8Nest.cs b/PKHeX.Core/Legality/Encounters/Data/Encounters8Nest.cs
index b657adcff..efa2a4d05 100644
--- a/PKHeX.Core/Legality/Encounters/Data/Encounters8Nest.cs
+++ b/PKHeX.Core/Legality/Encounters/Data/Encounters8Nest.cs
@@ -198,8 +198,8 @@ internal static class Encounters8Nest
         };
         
         // Abilities Allowed
-        private const int A3 = -1; // 1/2/H
-        internal const int A4 = 4; // H only
+        internal const int A3 = 0; // 1/2 only
+        internal const int A4 = -1; // 1/2/H
 
         internal static readonly EncounterStatic8N[] Nest_Common =
         {
diff --git a/PKHeX.Core/Legality/Encounters/EncounterStatic8N.cs b/PKHeX.Core/Legality/Encounters/EncounterStatic8N.cs
index 2be23dd79..2732505b7 100644
--- a/PKHeX.Core/Legality/Encounters/EncounterStatic8N.cs
+++ b/PKHeX.Core/Legality/Encounters/EncounterStatic8N.cs
@@ -60,7 +60,7 @@ protected override bool IsMatchLocation(PKM pkm)
 
         public override bool IsMatch(PKM pkm, int lvl)
         {
-            if (Ability == Encounters8Nest.A4 && pkm.AbilityNumber != 4)
+            if (Ability == Encounters8Nest.A3 && pkm.AbilityNumber == 4)
                 return false;
             if (pkm is IDynamaxLevel d && d.DynamaxLevel < DynamaxLevel)
                 return false;
@@ -81,4 +81,4 @@ public override bool IsMatchDeferred(PKM pkm)
             return false;
         }
     }
-}
\ No newline at end of file
+}