diff --git a/lib/geocoder/lookups/smarty_streets.rb b/lib/geocoder/lookups/smarty_streets.rb
index 118a7f0bd9575bd5646d6411ef2f1137f8f76839..db48738fd94d1efcbdee44e9c6a6342f085b0c55 100644
--- a/lib/geocoder/lookups/smarty_streets.rb
+++ b/lib/geocoder/lookups/smarty_streets.rb
@@ -8,7 +8,7 @@ module Geocoder::Lookup
     end
 
     def required_api_key_parts
-      %w(auth-token)
+      %w(auti-id auth-token)
     end
 
     def query_url(query)