diff --git a/db/migrate/20150603001843_add_unique_index_to_enterprise_permalink.rb b/db/migrate/20150603001843_add_unique_index_to_enterprise_permalink.rb
new file mode 100644
index 0000000000..e8841b2c5f
--- /dev/null
+++ b/db/migrate/20150603001843_add_unique_index_to_enterprise_permalink.rb
@@ -0,0 +1,16 @@
+class AddUniqueIndexToEnterprisePermalink < ActiveRecord::Migration
+  def change
+    duplicates = Enterprise.group(:permalink).having('count(*) > 1').pluck(:permalink)
+    duplicates.each { |p| resolve_permalink(p) };
+    add_index :enterprises, :permalink, :unique => true
+  end
+
+  def resolve_permalink(permalink)
+    conflicting = Enterprise.where(permalink: permalink)
+    while conflicting.size > 1 do
+      enterprise = conflicting.pop
+      enterprise.permalink = nil
+      enterprise.save
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 6d9de020f1..bf6ecae939 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20150527004427) do
+ActiveRecord::Schema.define(:version => 20150603001843) do
 
   create_table "adjustment_metadata", :force => true do |t|
     t.integer "adjustment_id"
@@ -323,6 +323,7 @@ ActiveRecord::Schema.define(:version => 20150527004427) do
   add_index "enterprises", ["confirmation_token"], :name => "index_enterprises_on_confirmation_token", :unique => true
   add_index "enterprises", ["is_primary_producer", "sells"], :name => "index_enterprises_on_is_primary_producer_and_sells"
   add_index "enterprises", ["owner_id"], :name => "index_enterprises_on_owner_id"
+  add_index "enterprises", ["permalink"], :name => "index_enterprises_on_permalink", :unique => true
   add_index "enterprises", ["sells"], :name => "index_enterprises_on_sells"
 
   create_table "exchange_fees", :force => true do |t|