diff --git a/PKHeX.WinForms/App.config b/PKHeX.WinForms/App.config
index 0f5260b28..b4d8f379c 100644
--- a/PKHeX.WinForms/App.config
+++ b/PKHeX.WinForms/App.config
@@ -26,7 +26,7 @@
                 <value>False</value>
             </setting>
             <setting name="FlagIllegal" serializeAs="String">
-                <value>False</value>
+                <value>True</value>
             </setting>
             <setting name="ModifyUnset" serializeAs="String">
                 <value>False</value>
diff --git a/PKHeX.WinForms/Properties/Settings.Designer.cs b/PKHeX.WinForms/Properties/Settings.Designer.cs
index b17414a59..c1eba368f 100644
--- a/PKHeX.WinForms/Properties/Settings.Designer.cs
+++ b/PKHeX.WinForms/Properties/Settings.Designer.cs
@@ -12,7 +12,7 @@ namespace PKHeX.WinForms.Properties {
     
     
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "14.0.0.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "15.3.0.0")]
     internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
         
         private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
@@ -97,7 +97,7 @@ internal sealed partial class Settings : global::System.Configuration.Applicatio
         
         [global::System.Configuration.UserScopedSettingAttribute()]
         [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
-        [global::System.Configuration.DefaultSettingValueAttribute("False")]
+        [global::System.Configuration.DefaultSettingValueAttribute("True")]
         public bool FlagIllegal {
             get {
                 return ((bool)(this["FlagIllegal"]));
diff --git a/PKHeX.WinForms/Properties/Settings.settings b/PKHeX.WinForms/Properties/Settings.settings
index a83d26a1f..4a1f7698b 100644
--- a/PKHeX.WinForms/Properties/Settings.settings
+++ b/PKHeX.WinForms/Properties/Settings.settings
@@ -21,7 +21,7 @@
       <Value Profile="(Default)">False</Value>
     </Setting>
     <Setting Name="FlagIllegal" Type="System.Boolean" Scope="User">
-      <Value Profile="(Default)">False</Value>
+      <Value Profile="(Default)">True</Value>
     </Setting>
     <Setting Name="ModifyUnset" Type="System.Boolean" Scope="User">
       <Value Profile="(Default)">False</Value>