diff --git a/app/controllers/prefixes_controller.rb b/app/controllers/prefixes_controller.rb
index d856922cd..ac668df83 100644
--- a/app/controllers/prefixes_controller.rb
+++ b/app/controllers/prefixes_controller.rb
@@ -136,6 +136,8 @@ def update
   end
 
   def totals
+    return [] unless params[:client_id].present?
+
     page = { size: 0, number: 1}
     response = Doi.query(nil, client_id: params[:client_id], state: "findable,registered", page: page, totals_agg: "prefix")
     registrant = prefixes_totals(response.response.aggregations.prefixes_totals.buckets)