diff --git a/Library/Homebrew/requirements/ld64_dependency.rb b/Library/Homebrew/requirements/ld64_dependency.rb
index 28440321d7b8e42f2eca7c0c39a9b01c59a54cd2..0520c0884678e14375e5374262b85be32abcecfd 100644
--- a/Library/Homebrew/requirements/ld64_dependency.rb
+++ b/Library/Homebrew/requirements/ld64_dependency.rb
@@ -4,7 +4,7 @@ require 'dependency'
 # formula is used as gcc's ld in place of the old version
 # that comes with the OS.
 class LD64Dependency < Dependency
-  def initialize(name='ld64', tags=[:build])
+  def initialize(name='ld64', tags=[:build], env_proc=nil)
     @env_proc = proc { ENV.ld64 }
     super
   end