diff --git a/PKHeX.Core/Saves/Substructures/Gen5/Misc5.cs b/PKHeX.Core/Saves/Substructures/Gen5/Misc5.cs
index d211dee23..f258d15da 100644
--- a/PKHeX.Core/Saves/Substructures/Gen5/Misc5.cs
+++ b/PKHeX.Core/Saves/Substructures/Gen5/Misc5.cs
@@ -21,7 +21,7 @@ public int Badges
         public ushort PokeTransferMinigameScore
         {
             get => BitConverter.ToUInt16(Data, Offset + TransferMinigameScoreOffset);
-            set => BitConverter.GetBytes(value).CopyTo(Data, TransferMinigameScoreOffset);
+            set => BitConverter.GetBytes(value).CopyTo(Data, Offset + TransferMinigameScoreOffset);
         }
 
         protected abstract int BadgeVictoryOffset { get; }