diff --git a/link.go b/link.go
index 9a5a662..3b83214 100644
--- a/link.go
+++ b/link.go
@@ -38,7 +38,7 @@ func (l *Link) Check() error {
 		}
 	}
 
-	if strings.Contains(l.Rel, ":") || !isValidIRI(IRI(l.Rel)) {
+	if strings.Contains(l.Rel, ":") && !isValidIRI(IRI(l.Rel)) {
 		return fmt.Errorf("rel attribute %v of link %v not correctly formatted", l.Rel, l.Href)
 	}