diff --git a/PKHeX.Core/Editing/PKM/EntitySummary.cs b/PKHeX.Core/Editing/PKM/EntitySummary.cs
index dc1011fbe..c14330867 100644
--- a/PKHeX.Core/Editing/PKM/EntitySummary.cs
+++ b/PKHeX.Core/Editing/PKM/EntitySummary.cs
@@ -96,7 +96,7 @@ public class EntitySummary // do NOT seal, allow inheritance
         public string Relearn2 => Get(Strings.movelist, pkm.RelearnMove2);
         public string Relearn3 => Get(Strings.movelist, pkm.RelearnMove3);
         public string Relearn4 => Get(Strings.movelist, pkm.RelearnMove4);
-        public ushort Checksum => pkm is ISanityChecksum s ? s.Checksum : PokeCrypto.GetCHK(pkm.Data, pkm.SIZE_STORED);
+        public ushort Checksum => pkm is ISanityChecksum s ? s.Checksum : Checksums.CRC16_CCITT(pkm.Data.AsSpan(pkm.SIZE_STORED));
         public int Friendship => pkm.OT_Friendship;
         public int Egg_Year => pkm.EggMetDate.GetValueOrDefault().Year;
         public int Egg_Month => pkm.EggMetDate.GetValueOrDefault().Month;