diff --git a/yarspg/examples/canonical-3-real-example-metadata.yarspg b/yarspg/examples/canonical-3-real-example-metadata.yarspg
index dea3b8a..9145468 100644
--- a/yarspg/examples/canonical-3-real-example-metadata.yarspg
+++ b/yarspg/examples/canonical-3-real-example-metadata.yarspg
@@ -2,7 +2,7 @@
 +["foaf:maker":"Łukasz Szeremeta and Dominik Tomaszuk"]
 S(NS1{"Author"}["fname":String,"lname":String])+["created":"yesterday"]
 S(NS2{"Entry","InProceedings"}["title":String,"numpages":Integer,"keyword":String OPTIONAL])
-S(NS3{"Entry","Article"}["title":String,"numpages":Integer,"keyword":List(String MIN 1 MAX 5) OPTIONAL])
+S(NS3{"Entry","Article"}["title":String,"numpages":Integer,"keyword":List(String MIN 1 MAX 5)OPTIONAL])
 S(NS4{"Proceedings"}["title":String,"year":Integer,"month":String OPTIONAL])
 S(NS5{"Journal"}["title":String,"year":Integer,"vol":Integer])
 S(NS2)-({"has_author"}["order":Integer])->(NS1)