diff --git a/ontology/uco/core/core.ttl b/ontology/uco/core/core.ttl
index a14616ab..a281dce2 100644
--- a/ontology/uco/core/core.ttl
+++ b/ontology/uco/core/core.ttl
@@ -405,7 +405,6 @@ core:UcoObject
 			sh:severity sh:Info ;
   		] ,
   		[
-			sh:minCount "1"^^xsd:integer ;
 			sh:maxCount "1"^^xsd:integer ;
 			sh:nodeKind sh:Literal ;
 			sh:or (