diff --git a/PKX/f1-Main.cs b/PKX/f1-Main.cs
index 5ce2544be..2abfc75e0 100644
--- a/PKX/f1-Main.cs
+++ b/PKX/f1-Main.cs
@@ -2069,6 +2069,8 @@ private void update_ID(object sender, EventArgs e)
         }
         private void validateComboBox(object sender)
         {
+            if (!formInitialized)
+                return;
             ComboBox cb = sender as ComboBox;
             if (cb == null) 
                 return;