diff --git a/docs/field-details.asciidoc b/docs/field-details.asciidoc
index c57d1c2e77..22d30abad4 100644
--- a/docs/field-details.asciidoc
+++ b/docs/field-details.asciidoc
@@ -7565,7 +7565,7 @@ The alias(es) of the group for a set of related intrusion activity that are trac
 type: keyword
 
 
-Note: this field should contain an array of values.
+Note: this field may contain an array of values.