diff --git a/middleman-core/lib/middleman-core/dependencies/vertices/data_collection_path_vertex.rb b/middleman-core/lib/middleman-core/dependencies/vertices/data_collection_path_vertex.rb
index 775b8e66..02e54bd6 100644
--- a/middleman-core/lib/middleman-core/dependencies/vertices/data_collection_path_vertex.rb
+++ b/middleman-core/lib/middleman-core/dependencies/vertices/data_collection_path_vertex.rb
@@ -58,7 +58,7 @@ module Middleman
       Contract ArrayOf[Or[Symbol, Num]] => Maybe[DataCollectionPathVertex::DATA_TYPE]
       def lookup_path(path)
         path.reduce(@controller) do |sum, part|
-          part === :__full_access__ ? sum : sum[part]
+          part == :__full_access__ ? sum : sum[part]
         end
       end