diff --git a/ontology/investigation/investigation.ttl b/ontology/investigation/investigation.ttl
index 76a2f84..3c7cd0d 100644
--- a/ontology/investigation/investigation.ttl
+++ b/ontology/investigation/investigation.ttl
@@ -287,6 +287,7 @@ investigation:authorizationIdentifier
 
 investigation:authorizationType
 	a owl:DatatypeProperty ;
+	rdfs:subPropertyOf uco-core:informalType ;
 	rdfs:label "authorizationType"@en ;
 	rdfs:comment "A label categorizing a type of authorization (e.g. warrant)"@en ;
 	rdfs:range xsd:string ;
@@ -308,6 +309,7 @@ investigation:focus
 
 investigation:investigationForm
 	a owl:DatatypeProperty ;
+	rdfs:subPropertyOf uco-core:informalType ;
 	rdfs:label "investigationForm"@en ;
 	rdfs:comment "A label categorizing a type of investigation (case, incident, suspicious-activity, etc.)"@en ;
 	rdfs:range [