diff --git a/src/linkahead/common/models.py b/src/linkahead/common/models.py
index 80e4273295dcfbebc093934c8ddfbcf3d78ecb4c..ea537ffe8c44a7a7fb79c2d4080b63f9b3da2284 100644
--- a/src/linkahead/common/models.py
+++ b/src/linkahead/common/models.py
@@ -81,7 +81,7 @@ NONE = "NONE"
 
 
 SPECIAL_ATTRIBUTES = ["name", "role", "datatype", "description",
-                      "id", "path", "checksum", "size"]
+                      "id", "path", "checksum", "size", "value"]
 
 
 class Entity:
@@ -154,7 +154,7 @@ class Entity:
         # Copy special attributes:
         # TODO: this might rise an exception when copying
         #       special file attributes like checksum and size.
-        for attribute in SPECIAL_ATTRIBUTES + ["value"]:
+        for attribute in SPECIAL_ATTRIBUTES:
             val = getattr(self, attribute)
             if val is not None:
                 setattr(new, attribute, val)