diff --git a/Source/Editor/Viewport/Previews/MaterialPreview.cs b/Source/Editor/Viewport/Previews/MaterialPreview.cs
index 0afe059e8..4d03e51f8 100644
--- a/Source/Editor/Viewport/Previews/MaterialPreview.cs
+++ b/Source/Editor/Viewport/Previews/MaterialPreview.cs
@@ -306,7 +306,7 @@ namespace FlaxEditor.Viewport.Previews
             }
             if (_splineModel != null)
             {
-                _particleEffect.IsActive = deformableMaterial != null;
+                _splineModel.IsActive = deformableMaterial != null;
                 _splineModel.Model = _previewModel.Model;
                 _splineModel.SetMaterial(0, deformableMaterial);
             }