diff --git a/app/models/custom_field.rb b/app/models/custom_field.rb
index 7cc6e865d..3aacd4686 100644
--- a/app/models/custom_field.rb
+++ b/app/models/custom_field.rb
@@ -23,7 +23,6 @@ class CustomField < ActiveRecord::Base
   validates_presence_of :name, :field_format
   validates_uniqueness_of :name, :scope => :type
   validates_length_of :name, :maximum => 30
-  validates_format_of :name, :with => /^[\w\s\.\'\-]*$/i
   validates_inclusion_of :field_format, :in => Redmine::CustomFieldFormat.available_formats
 
   def initialize(attributes = nil)
diff --git a/app/models/issue_status.rb b/app/models/issue_status.rb
index f376d5d15..8171cdb79 100644
--- a/app/models/issue_status.rb
+++ b/app/models/issue_status.rb
@@ -25,7 +25,6 @@ class IssueStatus < ActiveRecord::Base
   validates_presence_of :name
   validates_uniqueness_of :name
   validates_length_of :name, :maximum => 30
-  validates_format_of :name, :with => /^[\w\s\'\-]*$/i
   validates_inclusion_of :default_done_ratio, :in => 0..100, :allow_nil => true
 
   def after_save
diff --git a/app/models/role.rb b/app/models/role.rb
index d1bebdb6d..6a4b9e4e3 100644
--- a/app/models/role.rb
+++ b/app/models/role.rb
@@ -43,7 +43,6 @@ class Role < ActiveRecord::Base
   validates_presence_of :name
   validates_uniqueness_of :name
   validates_length_of :name, :maximum => 30
-  validates_format_of :name, :with => /^[\w\s\'\-]*$/i
 
   def permissions
     read_attribute(:permissions) || []
diff --git a/app/models/tracker.rb b/app/models/tracker.rb
index 9ee045ce1..93fdd4035 100644
--- a/app/models/tracker.rb
+++ b/app/models/tracker.rb
@@ -31,7 +31,6 @@ class Tracker < ActiveRecord::Base
   validates_presence_of :name
   validates_uniqueness_of :name
   validates_length_of :name, :maximum => 30
-  validates_format_of :name, :with => /^[\w\s\'\-]*$/i
 
   def to_s; name end
   
diff --git a/app/models/user.rb b/app/models/user.rb
index 91d6c5fd0..7d0014c8d 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -68,7 +68,6 @@ class User < Principal
   # Login must contain lettres, numbers, underscores only
   validates_format_of :login, :with => /^[a-z0-9_\-@\.]*$/i
   validates_length_of :login, :maximum => 30
-  validates_format_of :firstname, :lastname, :with => /^[\w\s\'\-\.]*$/i
   validates_length_of :firstname, :lastname, :maximum => 30
   validates_format_of :mail, :with => /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i, :allow_nil => true
   validates_length_of :mail, :maximum => 60, :allow_nil => true
diff --git a/lib/tasks/migrate_from_mantis.rake b/lib/tasks/migrate_from_mantis.rake
index e9244fcaf..cd82872c1 100644
--- a/lib/tasks/migrate_from_mantis.rake
+++ b/lib/tasks/migrate_from_mantis.rake
@@ -88,13 +88,11 @@ task :migrate_from_mantis => :environment do
       
       def firstname
         @firstname = realname.blank? ? username : realname.split.first[0..29]
-        @firstname.gsub!(/[^\w\s\'\-]/i, '')
         @firstname
       end
       
       def lastname
         @lastname = realname.blank? ? '-' : realname.split[1..-1].join(' ')[0..29]
-        @lastname.gsub!(/[^\w\s\'\-]/i, '')
         @lastname = '-' if @lastname.blank?
         @lastname
       end
@@ -224,7 +222,7 @@ task :migrate_from_mantis => :environment do
       end
       
       def name
-        read_attribute(:name)[0..29].gsub(/[^\w\s\'\-]/, '-')
+        read_attribute(:name)[0..29]
       end
     end
     
diff --git a/lib/tasks/migrate_from_trac.rake b/lib/tasks/migrate_from_trac.rake
index 0510be51e..f124703d4 100644
--- a/lib/tasks/migrate_from_trac.rake
+++ b/lib/tasks/migrate_from_trac.rake
@@ -246,8 +246,8 @@ namespace :redmine do
           ln = ($2 || '-').strip
 
           u = User.new :mail => mail.gsub(/[^-@a-z0-9\.]/i, '-'),
-                       :firstname => fn[0, limit_for(User, 'firstname')].gsub(/[^\w\s\'\-]/i, '-'),
-                       :lastname => ln[0, limit_for(User, 'lastname')].gsub(/[^\w\s\'\-]/i, '-')
+                       :firstname => fn[0, limit_for(User, 'firstname')],
+                       :lastname => ln[0, limit_for(User, 'lastname')]
 
           u.login = username[0,limit_for(User, 'login')].gsub(/[^a-z0-9_\-@\.]/i, '-')
           u.password = 'trac'