diff --git a/source/src/main/java/one/nem/lacerta/source/database/entity/LibraryEntity.java b/source/src/main/java/one/nem/lacerta/source/database/entity/LibraryEntity.java
index e8c45b09..ab6d8638 100644
--- a/source/src/main/java/one/nem/lacerta/source/database/entity/LibraryEntity.java
+++ b/source/src/main/java/one/nem/lacerta/source/database/entity/LibraryEntity.java
@@ -16,8 +16,7 @@ public class LibraryEntity {
     @NonNull
     public String id; // ドキュメントID
 
-    @ColumnInfo(name = "root_path")
-    public String rootPath; // rootのパス
+    // TODO-rca: 廃止？
 
     @ColumnInfo(name = "path")
     public String path; // パス