diff --git a/AlembicImporter/Assets/UTJ/AlembicImporter/Editor/AlembicImporter.cs b/AlembicImporter/Assets/UTJ/AlembicImporter/Editor/AlembicImporter.cs
index 34a8096e7..4dbeaa5e4 100644
--- a/AlembicImporter/Assets/UTJ/AlembicImporter/Editor/AlembicImporter.cs
+++ b/AlembicImporter/Assets/UTJ/AlembicImporter/Editor/AlembicImporter.cs
@@ -1,4 +1,4 @@
-#if UNITY_5_7_OR_NEWER || ENABLE_SCRIPTED_IMPORTERS
+#if ENABLE_SCRIPTED_IMPORTERS
 
 using UnityEditor;
 using UnityEngine;
diff --git a/AlembicImporter/Assets/UTJ/AlembicImporter/Editor/AlembicImporterEditor.cs b/AlembicImporter/Assets/UTJ/AlembicImporter/Editor/AlembicImporterEditor.cs
index e901b7f4f..af8fe50a1 100644
--- a/AlembicImporter/Assets/UTJ/AlembicImporter/Editor/AlembicImporterEditor.cs
+++ b/AlembicImporter/Assets/UTJ/AlembicImporter/Editor/AlembicImporterEditor.cs
@@ -1,4 +1,4 @@
-#if UNITY_5_7_OR_NEWER || ENABLE_SCRIPTED_IMPORTERS
+#if ENABLE_SCRIPTED_IMPORTERS
 
 using System;
 using UnityEditor;