diff --git a/Runtime/Scripts/Primitives/UIPrimitiveBase.cs b/Runtime/Scripts/Primitives/UIPrimitiveBase.cs
index e52823e..0c8ef11 100644
--- a/Runtime/Scripts/Primitives/UIPrimitiveBase.cs
+++ b/Runtime/Scripts/Primitives/UIPrimitiveBase.cs
@@ -10,6 +10,7 @@ namespace UnityEngine.UI.Extensions
         PerLine
     }
 
+    [RequireComponent(typeof(CanvasRenderer))]
     public class UIPrimitiveBase : MaskableGraphic, ILayoutElement, ICanvasRaycastFilter
     {
         static protected Material s_ETC1DefaultUI = null;