diff --git a/Library/Homebrew/dependency_collector.rb b/Library/Homebrew/dependency_collector.rb
index f022e870cc..8acbc0948f 100644
--- a/Library/Homebrew/dependency_collector.rb
+++ b/Library/Homebrew/dependency_collector.rb
@@ -63,7 +63,7 @@ private
       spec
     when Class
       if spec < Requirement
-        spec.new
+        spec.new(tag)
       else
         raise "#{spec} is not a Requirement subclass"
       end