diff --git a/PKHeX/Legality/Structures/EncounterArea.cs b/PKHeX/Legality/Structures/EncounterArea.cs
index 17f2e0f77..c2f305e29 100644
--- a/PKHeX/Legality/Structures/EncounterArea.cs
+++ b/PKHeX/Legality/Structures/EncounterArea.cs
@@ -380,7 +380,7 @@ private static IEnumerable<EncounterSlot> getSlots4_G_Replace(byte[] data, ref i
                 if (baseSlot.LevelMin <= 0)
                     continue;
 
-                int species = BitConverter.ToInt32(data, ofs + i * slotSize);
+                int species = BitConverter.ToUInt16(data, ofs + i * slotSize);
                 if (species <= 0)
                     continue;