diff --git a/db/migrate/20150525075550_update_certs_add_cn_from_csr.rb b/db/migrate/20150525075550_update_certs_add_cn_from_csr.rb
new file mode 100644
index 000000000..505d475b9
--- /dev/null
+++ b/db/migrate/20150525075550_update_certs_add_cn_from_csr.rb
@@ -0,0 +1,12 @@
+class UpdateCertsAddCnFromCsr < ActiveRecord::Migration
+  def change
+    Certificate.all.each do |x|
+      if x.crt.blank? && x.csr.present?
+        pc = x.parsed_crt.try(:subject).try(:to_s) || ''
+        cn = pc.scan(/\/CN=(.+)/).flatten.first
+        x.common_name = cn.split('/').first
+      end
+      x.save
+    end
+  end
+end