diff --git a/patacrep/data/templates/songbook_schema.yml b/patacrep/data/templates/songbook_schema.yml
index cd6dc66d..d569f983 100644
--- a/patacrep/data/templates/songbook_schema.yml
+++ b/patacrep/data/templates/songbook_schema.yml
@@ -1,6 +1,7 @@
 type: //rec
 optional:
   content: //str
+  template: //any
 required:
   _cache: //bool
   _datadir: