diff --git a/app/controllers/admin/enterprise_fees_controller.rb b/app/controllers/admin/enterprise_fees_controller.rb
index 73880badf4..992918d26e 100644
--- a/app/controllers/admin/enterprise_fees_controller.rb
+++ b/app/controllers/admin/enterprise_fees_controller.rb
@@ -10,7 +10,7 @@ module Admin
 
       blank_enterprise_fee = EnterpriseFee.new
       blank_enterprise_fee.enterprise = current_enterprise
-      3.times { @collection << blank_enterprise_fee }
+      3.times { @collection.to_a << blank_enterprise_fee }
 
       respond_to do |format|
         format.html