diff --git a/app/models/sample_attribute.rb b/app/models/sample_attribute.rb
index 62386928d2..bc895e6971 100644
--- a/app/models/sample_attribute.rb
+++ b/app/models/sample_attribute.rb
@@ -22,7 +22,7 @@ class SampleAttribute < ApplicationRecord
   # sample type exists
   attr_reader :deferred_link_to_self
 
-  # whether this attribute is tied to a controlled vocab which has a source ontology
+  # whether this attribute is tied to a controlled vocab which is based on an ontology
   delegate :ontology_based?, to: :sample_controlled_vocab, allow_nil: true
 
   def title=(title)