diff --git a/app/models/custom_field.rb b/app/models/custom_field.rb
index 704fbe010..4759b714b 100644
--- a/app/models/custom_field.rb
+++ b/app/models/custom_field.rb
@@ -32,7 +32,7 @@ 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\'\-]*$/i
+  validates_format_of :name, :with => /^[\w\s\.\'\-]*$/i
   validates_inclusion_of :field_format, :in => FIELD_FORMATS.keys
 
   def initialize(attributes = nil)