diff --git a/app/models/filter/params.rb b/app/models/filter/params.rb
index 1340e57f5..160c30775 100644
--- a/app/models/filter/params.rb
+++ b/app/models/filter/params.rb
@@ -11,6 +11,7 @@ module Filter::Params
   end
 
   included do
+    after_initialize :sanitize_params
     before_validation :sanitize_params
   end