diff --git a/Sources/Internal/NSManagedObjectModel+Setup.swift b/Sources/Internal/NSManagedObjectModel+Setup.swift
index d0c31e8..0d3c686 100644
--- a/Sources/Internal/NSManagedObjectModel+Setup.swift
+++ b/Sources/Internal/NSManagedObjectModel+Setup.swift
@@ -38,6 +38,7 @@ internal extension NSManagedObjectModel {
         
         guard let modelFilePath = bundle.path(forResource: modelName, ofType: "momd") else {
             
+            // For users migrating from very old Xcode versions: Old xcdatamodel files are not contained inside xcdatamodeld (with a "d"), and will thus fail this check. If that was the case, create a new xcdatamodeld file and copy all contents into the new model.
             CoreStore.abort("Could not find \"\(modelName).momd\" from the bundle. \(bundle)")
         }