diff --git a/PKHeX.Core/Legality/Checks.cs b/PKHeX.Core/Legality/Checks.cs
index e654bbaf1..8530d0ba1 100644
--- a/PKHeX.Core/Legality/Checks.cs
+++ b/PKHeX.Core/Legality/Checks.cs
@@ -1610,7 +1610,7 @@ private static bool VerifyHistoryUntradedEvolution(PKM pkm, out CheckResult resu
             result = null;
             // Handling Trainer string is empty implying it has not been traded.
             // If it must be trade evolved, flag it.
-            if (!Legal.IsTradeEvolved(pkm))
+            if (Legal.IsTradeEvolved(pkm))
                 return false;
 
             if (pkm.Species == 350) // Milotic
diff --git a/PKHeX.Core/Legality/Encounters/EvolutionVerifier.cs b/PKHeX.Core/Legality/Encounters/EvolutionVerifier.cs
index 69bb6e138..731bf7cbe 100644
--- a/PKHeX.Core/Legality/Encounters/EvolutionVerifier.cs
+++ b/PKHeX.Core/Legality/Encounters/EvolutionVerifier.cs
@@ -32,7 +32,7 @@ private static bool IsValidEvolution(PKM pkm, LegalInfo info)
             int species = pkm.Species;
             if (info.EncounterMatch.Species == species)
                 return true;
-            if (info.EncounterMatch.EggEncounter && species == 350 && pkm.Format >= 5) // Prism Scale
+            if (info.EncounterMatch.EggEncounter && species == 350 && pkm.Format >= 5 && !pkm.IsUntraded) // Prism Scale
                 return true;
             if (!Legal.IsEvolutionValid(pkm, info.EncounterMatch.Species))
                 return false;