diff --git a/PKHeX.WinForms/Controls/PKM Editor/PKMEditor.cs b/PKHeX.WinForms/Controls/PKM Editor/PKMEditor.cs
index ff1cc2985..814acd731 100644
--- a/PKHeX.WinForms/Controls/PKM Editor/PKMEditor.cs	
+++ b/PKHeX.WinForms/Controls/PKM Editor/PKMEditor.cs	
@@ -1439,6 +1439,9 @@ private void UpdateIsEgg(object sender, EventArgs e)
             // Wipe egg memories
             if (Entity.Format >= 6 && ModifyPKM)
                 Entity.ClearMemories();
+
+            if (Entity is PK9)
+                CB_GameOrigin.SelectedValue = 0;
         }
         else // Not Egg
         {