diff --git a/salt/elasticsearch/soc_elasticsearch.yaml b/salt/elasticsearch/soc_elasticsearch.yaml
index 8420611f2..c268cc493 100644
--- a/salt/elasticsearch/soc_elasticsearch.yaml
+++ b/salt/elasticsearch/soc_elasticsearch.yaml
@@ -12,7 +12,7 @@ elasticsearch:
     description: Specify the memory heap size in (m)egabytes for Elasticsearch.
     helpLink: elasticsearch.html
   index_clean:
-    description: Determines if indices should be considered for deletion by available disk space in the cluster. Otherwise, indices will only be deleted by the age defined in the ILM settings.
+    description: Determines if indices should be considered for deletion by available disk space in the cluster. Otherwise, indices will only be deleted by the age defined in the ILM settings. This setting only applies to EVAL, STANDALONE, and HEAVY NODE installations. Other installations can only use ILM settings.
     forcedType: bool
     helpLink: elasticsearch.html
   retention: