diff --git a/app/models/issue.rb b/app/models/issue.rb
index e4c215c9..d9047ae2 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -368,7 +368,7 @@ class Issue < ActiveRecord::Base
   def attachment_removed(obj)
     init_journal(User.current)
     create_journal
-    last_journal.update_attribute(:changes, {"attachments_" + obj.id.to_s => [obj.filename, nil]}.to_yaml)
+    last_journal.update_attribute(:changes, {"attachments_" + obj.id.to_s => [obj.filename, nil]})
   end
 
   # Return true if the issue is closed, otherwise false
diff --git a/app/models/wiki_content.rb b/app/models/wiki_content.rb
index 1444fd4a..88e62c11 100644
--- a/app/models/wiki_content.rb
+++ b/app/models/wiki_content.rb
@@ -98,7 +98,7 @@ class WikiContent < ActiveRecord::Base
       changes.delete("text")
       changes["data"] = hash[:text]
       changes["compression"] = hash[:compression]
-      update_attribute(:changes, changes.to_yaml)
+      update_attribute(:changes, changes)
     end
 
     def text
diff --git a/db/migrate/20100714111654_add_changes_from_journal_details_for_acts_as_journalized.rb b/db/migrate/20100714111654_add_changes_from_journal_details_for_acts_as_journalized.rb
index 1690623e..35c093e1 100644
--- a/db/migrate/20100714111654_add_changes_from_journal_details_for_acts_as_journalized.rb
+++ b/db/migrate/20100714111654_add_changes_from_journal_details_for_acts_as_journalized.rb
@@ -31,7 +31,7 @@ class AddChangesFromJournalDetailsForActsAsJournalized < ActiveRecord::Migration
           changes["attachments_" + detail.prop_key.to_s] = [detail.old_value, detail.value]
         end
         begin
-          journal.update_attribute(:changes, changes.to_yaml)
+          journal.update_attribute(:changes, changes)
         rescue ActiveRecord::RecordInvalid => ex
           puts "Error saving: #{journal.class.to_s}##{journal.id} - #{ex.message}"
         end
diff --git a/db/migrate/20100804112053_merge_wiki_versions_with_journals.rb b/db/migrate/20100804112053_merge_wiki_versions_with_journals.rb
index 3cc034af..58efa457 100644
--- a/db/migrate/20100804112053_merge_wiki_versions_with_journals.rb
+++ b/db/migrate/20100804112053_merge_wiki_versions_with_journals.rb
@@ -39,7 +39,7 @@ class MergeWikiVersionsWithJournals < ActiveRecord::Migration
       changes = {}
       changes["compression"] = wv.compression
       changes["data"] = wv.data
-      journal.update_attribute(:changes, changes.to_yaml)
+      journal.update_attribute(:changes, changes)
       journal.update_attribute(:version, wv.version)
     end
     # drop_table :wiki_content_versions
diff --git a/test/test_helper.rb b/test/test_helper.rb
index b66a5ebe..f8adc32d 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -170,14 +170,14 @@ class ActiveSupport::TestCase
 
       should "use the new value's name" do
         @detail = IssueJournal.generate(:version => 1, :journaled => Issue.last)
-        @detail.update_attribute(:changes, {prop_key => [@old_value.id, @new_value.id]}.to_yaml)
+        @detail.update_attribute(:changes, {prop_key => [@old_value.id, @new_value.id]})
 
         assert_match @new_value.class.find(@new_value.id).name, @detail.render_detail(prop_key, true)
       end
 
       should "use the old value's name" do
         @detail = IssueJournal.generate(:version => 1, :journaled => Issue.last)
-        @detail.update_attribute(:changes, {prop_key => [@old_value.id, @new_value.id]}.to_yaml)
+        @detail.update_attribute(:changes, {prop_key => [@old_value.id, @new_value.id]})
 
         assert_match @old_value.class.find(@old_value.id).name, @detail.render_detail(prop_key, true)
       end