diff --git a/Library/Homebrew/development_tools.rb b/Library/Homebrew/development_tools.rb
index b7787d8493..ba342c435c 100644
--- a/Library/Homebrew/development_tools.rb
+++ b/Library/Homebrew/development_tools.rb
@@ -16,7 +16,7 @@ class DevelopmentTools
     end
 
     def installed?
-      which("clang") || which("gcc")
+      locate("clang") || locate("gcc")
     end
 
     def installation_instructions