diff --git a/lib/hal_api/controller/filtering.rb b/lib/hal_api/controller/filtering.rb
index ad7fcf5..4fa5596 100644
--- a/lib/hal_api/controller/filtering.rb
+++ b/lib/hal_api/controller/filtering.rb
@@ -62,7 +62,7 @@ def index_collection
     # add facets if defined, removing filters/facets with counts of 0
     non_zero_facets = (filter_facets || {}).with_indifferent_access.tap do |hash|
       hash.each do |filter_key, facets|
-        hash[filter_key] = facets.select { |f| f.try(:[], :count) > 0 }
+        hash[filter_key] = facets.try(:select) { |f| f.try(:[], :count) > 0 }
         hash.delete(filter_key) if hash[filter_key].blank?
       end
     end