diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Modules/Shaders/Sprite/CGIncludes/ShaderShared.cginc b/spine-unity/Assets/Spine/Runtime/spine-unity/Modules/Shaders/Sprite/CGIncludes/ShaderShared.cginc
index 2481b3d4a..70cc49eed 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Modules/Shaders/Sprite/CGIncludes/ShaderShared.cginc
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Modules/Shaders/Sprite/CGIncludes/ShaderShared.cginc
@@ -5,11 +5,7 @@
 
 #ifdef UNITY_INSTANCING_ENABLED
 
-#if UNITY_2017_3_OR_NEWER
-	UNITY_INSTANCING_BUFFER_START(PerDrawSprite)
-#else
     UNITY_INSTANCING_CBUFFER_START(PerDrawSprite)
-#endif
         // SpriteRenderer.Color while Non-Batched/Instanced.
         fixed4 unity_SpriteRendererColorArray[UNITY_INSTANCED_ARRAY_SIZE];
         // this could be smaller but that's how bit each entry is regardless of type