diff --git a/src/main/lombok/org/warp/filesponge/extra/api/FileURITranslator.java b/src/main/lombok/org/warp/filesponge/extra/api/FileURITranslator.java
index 19986f6..932a7f5 100644
--- a/src/main/lombok/org/warp/filesponge/extra/api/FileURITranslator.java
+++ b/src/main/lombok/org/warp/filesponge/extra/api/FileURITranslator.java
@@ -19,6 +19,7 @@
 package org.warp.filesponge.extra.api;
 
 import java.util.Optional;
+import org.warp.filesponge.value.AlreadyAssignedException;
 import org.warp.filesponge.value.FileURI;
 
 /**
diff --git a/src/main/lombok/org/warp/filesponge/extra/api/AlreadyAssignedException.java b/src/main/lombok/org/warp/filesponge/value/AlreadyAssignedException.java
similarity index 93%
rename from src/main/lombok/org/warp/filesponge/extra/api/AlreadyAssignedException.java
rename to src/main/lombok/org/warp/filesponge/value/AlreadyAssignedException.java
index 97d2896..4d8f0b7 100644
--- a/src/main/lombok/org/warp/filesponge/extra/api/AlreadyAssignedException.java
+++ b/src/main/lombok/org/warp/filesponge/value/AlreadyAssignedException.java
@@ -1,6 +1,6 @@
 /*
  *     FileSponge
- *     Copyright (C) 2020 Andrea Cavalli
+ *     Copyright (C) 2021 Andrea Cavalli
  *
  *     This program is free software: you can redistribute it and/or modify
  *     it under the terms of the GNU General Public License as published by
@@ -16,7 +16,7 @@
  *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-package org.warp.filesponge.extra.api;
+package org.warp.filesponge.value;
 
 public class AlreadyAssignedException extends Exception {