diff --git a/Library/Homebrew/requirements/mpi_dependency.rb b/Library/Homebrew/requirements/mpi_dependency.rb
index 28a03d566e..67c22d73f7 100644
--- a/Library/Homebrew/requirements/mpi_dependency.rb
+++ b/Library/Homebrew/requirements/mpi_dependency.rb
@@ -9,8 +9,6 @@ class MPIDependency < Requirement
 
   fatal true
 
-  default_formula 'open-mpi'
-
   env :userpaths
 
   def initialize *lang_list