diff --git a/Editor/ParameterPolicy.cs b/Editor/ParameterPolicy.cs
index 41288167..0defe6cf 100644
--- a/Editor/ParameterPolicy.cs
+++ b/Editor/ParameterPolicy.cs
@@ -37,6 +37,7 @@ namespace nadena.dev.modular_avatar.core.editor
         public static ImmutableHashSet<string> VRCSDKParameters = new string[]
         {
             "IsLocal",
+            "PreviewMode",
             "Viseme",
             "Voice",
             "GestureLeft",