diff --git a/lib/csdl2openapi.js b/lib/csdl2openapi.js
index 728bf4e9..da3f0637 100644
--- a/lib/csdl2openapi.js
+++ b/lib/csdl2openapi.js
@@ -1,7 +1,7 @@
 /**
  * Converts OData CSDL JSON to OpenAPI 3.0.2
  *
- * Latest version: https://github.com/oasis-tcs/odata-openapi/blob/master/lib/csdl2openapi.js
+ * Latest version: https://github.com/oasis-tcs/odata-openapi/blob/main/lib/csdl2openapi.js
  */
 
 const { EDM, nameParts } = require("./edm");
diff --git a/lib/diagram.js b/lib/diagram.js
index 57cbf39a..346163fb 100644
--- a/lib/diagram.js
+++ b/lib/diagram.js
@@ -1,14 +1,10 @@
 /**
  * Resource diagram for an OData model using https://yuml.me
  *
- * Latest version: https://github.com/oasis-tcs/odata-openapi/blob/master/lib/edm.js
+ * Latest version: https://github.com/oasis-tcs/odata-openapi/blob/main/lib/edm.js
  */
 
-const { isIdentifier, nameParts } = require("./edm");
-
-{
-  isIdentifier;
-}
+const { nameParts } = require("./edm");
 
 module.exports = { resourceDiagram };
 
diff --git a/lib/edm.js b/lib/edm.js
index 2211b673..67196524 100644
--- a/lib/edm.js
+++ b/lib/edm.js
@@ -1,7 +1,7 @@
 /**
  * Entity Data Model for OData
  *
- * Latest version: https://github.com/oasis-tcs/odata-openapi/blob/master/lib/edm.js
+ * Latest version: https://github.com/oasis-tcs/odata-openapi/blob/main/lib/edm.js
  */
 
 module.exports = { nameParts };