diff --git a/Library/Homebrew/build.rb b/Library/Homebrew/build.rb
index d61c3672a1..5953802458 100644
--- a/Library/Homebrew/build.rb
+++ b/Library/Homebrew/build.rb
@@ -59,8 +59,6 @@ class Build
         Dependency.prune
       elsif dep.build? && dependent != formula
         Dependency.prune
-      elsif dep.build?
-        Dependency.keep_but_prune_recursive_deps
       end
     end
   end