diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb
index b16983026ea17ccd9b09e8e59c1c8108d25fe784..265bad7bc25355d10def25d37ac67cfaa4297ba7 100644
--- a/activerecord/lib/active_record/associations.rb
+++ b/activerecord/lib/active_record/associations.rb
@@ -776,7 +776,7 @@ def association_instance_set(name, association)
     #
     # If you want to load all posts (including posts with no approved comments) then write
     # your own LEFT OUTER JOIN query using ON
-    # 
+    #
     #   Post.joins('LEFT OUTER JOIN comments ON comments.post_id = posts.id AND comments.approved = true')
     #
     # You must disambiguate column references for this fallback to happen, for example