diff --git a/conf.yaml b/conf.yaml
index d4a5d99e25d64..b8c0f497c5ce1 100644
--- a/conf.yaml
+++ b/conf.yaml
@@ -141,6 +141,7 @@ contents:
             chunk:      1
             tags:       Elastic Common Schema (ECS)/Reference
             subject:    Elastic Common Schema (ECS)
+            asciidoctor: true
             sources:
               -
                 repo:   ecs
diff --git a/doc_build_aliases.sh b/doc_build_aliases.sh
index d6055f4aa1190..e8f08f948bb8e 100644
--- a/doc_build_aliases.sh
+++ b/doc_build_aliases.sh
@@ -149,7 +149,7 @@ alias docbldesh='$GIT_HOME/docs/build_docs --asciidoctor --doc $GIT_HOME/elastic
 alias docbldx='$GIT_HOME/docs/build_docs.pl --doc $GIT_HOME/x-pack/docs/en/index.asciidoc --resource=$GIT_HOME/kibana-extra/x-pack-kibana/docs --resource=$GIT_HOME/elasticsearch-extra/x-pack-elasticsearch/docs --chunk 1'
 
 # ECS
-alias docbldecs='$GIT_HOME/docs/build_docs.pl --doc $GIT_HOME/ecs/docs/index.asciidoc --chunk 1'
+alias docbldecs='$GIT_HOME/docs/build_docs --asciidoctor --doc $GIT_HOME/ecs/docs/index.asciidoc --chunk 1'
 
 # GKE 
 alias docbldgke='$GIT_HOME/docs/build_docs --asciidoctor --doc $GIT_HOME/stack-docs/docs/en/gke-on-prem/index.asciidoc --chunk 1'