diff --git a/PKHeX.WinForms/Controls/PKM Editor/TrainerID.cs b/PKHeX.WinForms/Controls/PKM Editor/TrainerID.cs
index e266a21e4..d2861e35c 100644
--- a/PKHeX.WinForms/Controls/PKM Editor/TrainerID.cs	
+++ b/PKHeX.WinForms/Controls/PKM Editor/TrainerID.cs	
@@ -20,7 +20,7 @@ public void UpdateTSV()
                 return;
 
             string IDstr = $"TSV: {tsv:d4}";
-            var repack = (Trainer.SID * 1_000_000) + Trainer.TID;
+            var repack = (uint)((Trainer.SID * 1_000_000) + Trainer.TID);
 
             string supplement = Format < 7
                 ? $"G7ID: ({repack / 1_000_000:D4}){repack % 1_000_000:D6}"