diff --git a/app/serializers/api/open_street_map_config_serializer.rb b/app/serializers/api/open_street_map_config_serializer.rb
index 8c5aec5dbb..2253f3e15d 100644
--- a/app/serializers/api/open_street_map_config_serializer.rb
+++ b/app/serializers/api/open_street_map_config_serializer.rb
@@ -15,7 +15,7 @@ module Api
     end
 
     def open_street_map_provider_options
-      ContentConfig.open_street_map_provider_options.to_json
+      ContentConfig.open_street_map_provider_options
     end
   end
 end