diff --git a/middleman-core/lib/middleman-core/sitemap.rb b/middleman-core/lib/middleman-core/sitemap.rb
index d3392f68..02554cca 100644
--- a/middleman-core/lib/middleman-core/sitemap.rb
+++ b/middleman-core/lib/middleman-core/sitemap.rb
@@ -70,6 +70,7 @@ module Middleman
       # Get the resource object for the current path
       # @return [Middleman::Sitemap::Resource]
       def current_resource
+        return nil unless current_path
         sitemap.find_resource_by_destination_path(current_path)
       end
 
diff --git a/middleman-more/lib/middleman-more/extensions/relative_assets.rb b/middleman-more/lib/middleman-more/extensions/relative_assets.rb
index 0bb0a777..c848f672 100644
--- a/middleman-more/lib/middleman-more/extensions/relative_assets.rb
+++ b/middleman-more/lib/middleman-more/extensions/relative_assets.rb
@@ -32,7 +32,7 @@ module Middleman
         def asset_url(path, prefix="")
           path = super(path, prefix)
 
-          if path.include?("//")
+          if path.include?("//") || !current_resource
             path
           else
             current_dir = Pathname('/' + current_resource.destination_path)