diff --git a/Rakefile b/Rakefile
index c1d9d03a..93c18ab7 100644
--- a/Rakefile
+++ b/Rakefile
@@ -8,7 +8,7 @@ task :install => [:submodule_init, :submodules] do
   puts "======================================================"
   puts
 
-  #install_homebrew if RUBY_PLATFORM.downcase.include?("darwin")
+  install_homebrew if RUBY_PLATFORM.downcase.include?("darwin")
   install_rvm_binstubs
 
   # this has all the runcoms from this directory.
@@ -79,11 +79,15 @@ def install_rvm_binstubs
 end
 
 def install_homebrew
-  puts "======================================================"
-  puts "Installing Homebrew, the OSX package manager...If it's"
-  puts "already installed, this will do nothing."
-  puts "======================================================"
-  run %{ruby -e "$(curl -fsSkL raw.github.com/mxcl/homebrew/go)"}
+  brew_path = run("which brew")
+  unless $?.success?
+    puts "======================================================"
+    puts "Installing Homebrew, the OSX package manager...If it's"
+    puts "already installed, this will do nothing."
+    puts "======================================================"
+    run %{ruby -e "$(curl -fsSkL raw.github.com/mxcl/homebrew/go)"}
+  end
+
   puts
   puts
   puts "======================================================"