diff --git a/misp-galaxy-format/raw.md b/misp-galaxy-format/raw.md
index 7162c2a..8c7b61f 100644
--- a/misp-galaxy-format/raw.md
+++ b/misp-galaxy-format/raw.md
@@ -104,12 +104,10 @@ Related contains a list of JSON key value pairs which describe the related value
 
 ## meta
 
-Meta contains a list of custom defined JSON key value pairs. Users **SHOULD** reuse commonly used keys such as properties, complexity, effectiveness, country, possible_issues, colour, motive, impact, refs, synonyms, derivated_from, status, date, encryption, extensions, ransomnotes, cfr-suspected-victims, cfr-suspected-state-sponsor, cfr-type-of-incident, cfr-target-category wherever applicable.
+Meta contains a list of custom defined JSON key value pairs. Users **SHOULD** reuse commonly used keys such as properties, complexity, effectiveness, country, possible_issues, colour, motive, impact, refs, synonyms, status, date, encryption, extensions, ransomnotes, cfr-suspected-victims, cfr-suspected-state-sponsor, cfr-type-of-incident, cfr-target-category wherever applicable.
 
 properties is used to provide clusters with additional properties. Properties are represented as an array containing one or more strings ans **MAY** be present.
 
-derivated_from, refs, synonyms **SHALL** be used to give further informations. refs is represented as an array containing one or more strings and **SHALL** be present. synonyms is represented as an array containing one or more strings and **SHALL** be present. derivated_from is represented as an array containing one or more strings and **SHALL** be present.
-
 date, status **MAY** be used to give time information about an cluster. date is represented as a string describing a time or period and **SHALL** be present. status is represented as a string describing the current status of the clusters. It **MAY** also describe a time or period and **SHALL** be present.
 
 colour fields **MAY** be used at predicates or values level to set a specify colour that **MAY** be used by the implementation. The colour field is described as an RGB colour fill in hexadecimal representation.
@@ -347,13 +345,6 @@ The JSON Schema [@?JSON-SCHEMA] below defines the overall MISP galaxy formats. T
                   "type": "string"
                 }
               },
-              "derivated_from": {
-                "type": "array",
-                "uniqueItems": true,
-                "items": {
-                  "type": "string"
-                }
-              },
               "status": {
                 "type": "string"
               },