diff --git a/app/models/ad_image.rb b/app/models/ad_image.rb
index 041e304..18ef018 100644
--- a/app/models/ad_image.rb
+++ b/app/models/ad_image.rb
@@ -27,7 +27,7 @@ class AdImage
 
   before_validation :add_http
   # validates :file, presence: true
-  validates :out_link, format: { with: URI::regexp(%w(http https \/)) }, allow_blank: true
+  validates :out_link, format: {:with=> /\A(http:\/\/|https:\/\/|\/)/i}, allow_blank: true
   # validates :title, presence: true
 
   scope :can_display, ->{self.and(AdImage.or({:postdate.lte=>Time.now},{:postdate=>nil}).selector,AdImage.or({:deadline.gte=>Time.now},{:deadline=>nil}).selector)}