diff --git a/Isabelle_DOF-Ontologies/CC_v3_1_R5/CC_terminology.thy b/Isabelle_DOF-Ontologies/CC_v3_1_R5/CC_terminology.thy
index 06b2892..c45aec3 100644
--- a/Isabelle_DOF-Ontologies/CC_v3_1_R5/CC_terminology.thy
+++ b/Isabelle_DOF-Ontologies/CC_v3_1_R5/CC_terminology.thy
@@ -20,6 +20,9 @@ imports
 "Isabelle_DOF.technical_report" 
 
 begin
+
+define_ontology "DOF-CC_terminology.sty" "CC"
+
 (*>>*)
 text\<open>We re-use the class @\<open>typ math_content\<close>, which provides also a framework for
 semi-formal terminology, which we re-use by this definition.\<close>
diff --git a/Isabelle_DOF-Ontologies/document_setup.thy b/Isabelle_DOF-Ontologies/document_setup.thy
index 701ea9b..8779e8b 100644
--- a/Isabelle_DOF-Ontologies/document_setup.thy
+++ b/Isabelle_DOF-Ontologies/document_setup.thy
@@ -3,10 +3,12 @@ theory "document_setup"
   imports
   "Isabelle_DOF.technical_report"
   "Isabelle_DOF-Ontologies.CENELEC_50128"
+  "Isabelle_DOF-Ontologies.CC_terminology"
 begin
 
 use_template "scrreprt-modern"
 use_ontology "Isabelle_DOF.technical_report" and "Isabelle_DOF-Ontologies.CENELEC_50128"
+         and "Isabelle_DOF-Ontologies.CC_terminology"
 
 (*>*)