diff --git a/PKHeX/Legality/Structures/EvolutionTree.cs b/PKHeX/Legality/Structures/EvolutionTree.cs
index 6b14c3491..758858a8f 100644
--- a/PKHeX/Legality/Structures/EvolutionTree.cs
+++ b/PKHeX/Legality/Structures/EvolutionTree.cs
@@ -168,12 +168,12 @@ public bool Valid(PKM pkm, int lvl)
                     if (pkm.CNT_Beauty > Argument)
                         return false;
                     goto default;
-                case 23: // Gender = Female
-                    if (pkm.Gender != 1)
+                case 23: // Gender = Male
+                    if (pkm.Gender != 0)
                         return false;
                     goto default;
-                case 24: // Gender = Male
-                    if (pkm.Gender != 0)
+                case 24: // Gender = Female
+                    if (pkm.Gender != 1)
                         return false;
                     goto default;
                 case 34: // Gender = Female, out Form1