diff --git a/PKHeX/Legality/Core.cs b/PKHeX/Legality/Core.cs
index 88922e49a..ccc552536 100644
--- a/PKHeX/Legality/Core.cs
+++ b/PKHeX/Legality/Core.cs
@@ -91,8 +91,7 @@ private static EncounterArea[] addExtraTableSlots(EncounterArea[] GameSlots, Enc
         {
             foreach (EncounterArea g in GameSlots)
             {
-                EncounterArea slots = SpecialSlots.FirstOrDefault(l => l.Location == g.Location);
-                if (slots != null)
+                foreach (var slots in SpecialSlots.Where(l => l.Location == g.Location))
                     g.Slots = g.Slots.Concat(slots.Slots).ToArray();
             }
             return GameSlots;