diff --git a/db/migrate/002_issue_move.rb b/db/migrate/002_issue_move.rb
index 085593e08..98e95d3b9 100644
--- a/db/migrate/002_issue_move.rb
+++ b/db/migrate/002_issue_move.rb
@@ -7,6 +7,6 @@ class IssueMove < ActiveRecord::Migration
   end
 
   def self.down
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'projects', 'move_issues']).destroy
+    Permission.where("controller=? and action=?", 'projects', 'move_issues').first.destroy
   end
 end
diff --git a/db/migrate/003_issue_add_note.rb b/db/migrate/003_issue_add_note.rb
index a2ab756ee..dabdb858f 100644
--- a/db/migrate/003_issue_add_note.rb
+++ b/db/migrate/003_issue_add_note.rb
@@ -7,6 +7,6 @@ class IssueAddNote < ActiveRecord::Migration
   end
 
   def self.down
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'issues', 'add_note']).destroy
+    Permission.where("controller=? and action=?", 'issues', 'add_note').first.destroy
   end
 end
diff --git a/db/migrate/004_export_pdf.rb b/db/migrate/004_export_pdf.rb
index 6ccd67eae..8d4ba0b3a 100644
--- a/db/migrate/004_export_pdf.rb
+++ b/db/migrate/004_export_pdf.rb
@@ -8,7 +8,7 @@ class ExportPdf < ActiveRecord::Migration
   end
 
   def self.down
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'projects', 'export_issues_pdf']).destroy
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'issues', 'export_pdf']).destroy
+    Permission.where("controller=? and action=?", 'projects', 'export_issues_pdf').first.destroy
+    Permission.where("controller=? and action=?", 'issues', 'export_pdf').first.destroy
   end
 end
diff --git a/db/migrate/006_calendar_and_activity.rb b/db/migrate/006_calendar_and_activity.rb
index 1cdc91d8e..a30979a21 100644
--- a/db/migrate/006_calendar_and_activity.rb
+++ b/db/migrate/006_calendar_and_activity.rb
@@ -9,8 +9,8 @@ class CalendarAndActivity < ActiveRecord::Migration
   end
 
   def self.down
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'projects', 'activity']).destroy
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'projects', 'calendar']).destroy
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'projects', 'gantt']).destroy
+    Permission.where("controller=? and action=?", 'projects', 'activity').first.destroy
+    Permission.where("controller=? and action=?", 'projects', 'calendar').first.destroy
+    Permission.where("controller=? and action=?", 'projects', 'gantt').first.destroy
   end
 end
diff --git a/db/migrate/007_create_journals.rb b/db/migrate/007_create_journals.rb
index e219ef67a..63bdd2374 100644
--- a/db/migrate/007_create_journals.rb
+++ b/db/migrate/007_create_journals.rb
@@ -51,6 +51,6 @@ class CreateJournals < ActiveRecord::Migration
 
     add_index "issue_histories", ["issue_id"], :name => "issue_histories_issue_id"
 
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'issues', 'history']).destroy
+    Permission.where("controller=? and action=?", 'issues', 'history').first.destroy
   end
 end
diff --git a/db/migrate/012_add_comments_permissions.rb b/db/migrate/012_add_comments_permissions.rb
index 2bbf87b02..91eed6443 100644
--- a/db/migrate/012_add_comments_permissions.rb
+++ b/db/migrate/012_add_comments_permissions.rb
@@ -8,7 +8,7 @@ class AddCommentsPermissions < ActiveRecord::Migration
   end
 
   def self.down
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'news', 'add_comment']).destroy
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'news', 'destroy_comment']).destroy
+    Permission.where("controller=? and action=?", 'news', 'add_comment').first.destroy
+    Permission.where("controller=? and action=?", 'news', 'destroy_comment').first.destroy
   end
 end
diff --git a/db/migrate/014_add_queries_permissions.rb b/db/migrate/014_add_queries_permissions.rb
index 34eba1e26..ae1f2455d 100644
--- a/db/migrate/014_add_queries_permissions.rb
+++ b/db/migrate/014_add_queries_permissions.rb
@@ -7,6 +7,6 @@ class AddQueriesPermissions < ActiveRecord::Migration
   end
 
   def self.down
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'projects', 'add_query']).destroy
+    Permission.where("controller=? and action=?", 'projects', 'add_query').first.destroy
   end
 end
diff --git a/db/migrate/016_add_repositories_permissions.rb b/db/migrate/016_add_repositories_permissions.rb
index 341707639..9fcddb09c 100644
--- a/db/migrate/016_add_repositories_permissions.rb
+++ b/db/migrate/016_add_repositories_permissions.rb
@@ -12,11 +12,11 @@ class AddRepositoriesPermissions < ActiveRecord::Migration
   end
 
   def self.down
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'repositories', 'show']).destroy
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'repositories', 'browse']).destroy
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'repositories', 'entry']).destroy
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'repositories', 'revisions']).destroy
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'repositories', 'revision']).destroy
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'repositories', 'diff']).destroy
+    Permission.where("controller=? and action=?", 'repositories', 'show').first.destroy
+    Permission.where("controller=? and action=?", 'repositories', 'browse').first.destroy
+    Permission.where("controller=? and action=?", 'repositories', 'entry').first.destroy
+    Permission.where("controller=? and action=?", 'repositories', 'revisions').first.destroy
+    Permission.where("controller=? and action=?", 'repositories', 'revision').first.destroy
+    Permission.where("controller=? and action=?", 'repositories', 'diff').first.destroy
   end
 end
diff --git a/db/migrate/024_add_roadmap_permission.rb b/db/migrate/024_add_roadmap_permission.rb
index 5c37beac1..f521e6025 100644
--- a/db/migrate/024_add_roadmap_permission.rb
+++ b/db/migrate/024_add_roadmap_permission.rb
@@ -7,6 +7,6 @@ class AddRoadmapPermission < ActiveRecord::Migration
   end
 
   def self.down
-    Permission.find(:first, :conditions => ["controller=? and action=?", 'projects', 'roadmap']).destroy
+    Permission.where("controller=? and action=?", 'projects', 'roadmap').first.destroy
   end
 end