diff --git a/test/unit/issue_test.rb b/test/unit/issue_test.rb
index 5fe7985fa..74fbb6b26 100644
--- a/test/unit/issue_test.rb
+++ b/test/unit/issue_test.rb
@@ -413,7 +413,7 @@ class IssueTest < ActiveSupport::TestCase
   def test_should_not_be_able_to_assign_a_new_issue_to_a_locked_version
     issue = Issue.new(:project_id => 1, :tracker_id => 1, :author_id => 1, :status_id => 1, :fixed_version_id => 2, :subject => 'New issue')
     assert !issue.save
-    assert_not_nil issue.errors.on(:fixed_version_id)
+    assert_not_nil issue.errors[:fixed_version_id]
   end
 
   def test_should_be_able_to_assign_a_new_issue_to_an_open_version