diff --git a/PKHeX.Core/Legality/Encounters/Generator/EncounterFinder.cs b/PKHeX.Core/Legality/Encounters/Generator/EncounterFinder.cs
index e61d05e02..e6d2a3670 100644
--- a/PKHeX.Core/Legality/Encounters/Generator/EncounterFinder.cs
+++ b/PKHeX.Core/Legality/Encounters/Generator/EncounterFinder.cs
@@ -126,7 +126,7 @@ private static bool VerifySecondaryChecks(PKM pkm, LegalInfo info, PeekEnumerato
                         return false;
                 }
             }
-            else if (pkm is PK1 pk1)
+            else if (pkm is PK1 pk1 && !ParseSettings.AllowGen1Tradeback)
             {
                 if (!Array.TrueForAll(info.Moves, z => z.Generation is 1) && !PK1.IsCatchRateHeldItem(pk1.Catch_Rate))
                     return false;