diff --git a/install_homebrew.rb b/install_homebrew.rb
index a43839ae1e..037d75b453 100644
--- a/install_homebrew.rb
+++ b/install_homebrew.rb
@@ -52,9 +52,9 @@ end
 
 def sudo *args
   args = if args.length > 1
-    args.unshift "sudo"
+    args.unshift "/usr/bin/sudo"
   else
-    "sudo #{args}"
+    "/usr/bin/sudo #{args}"
   end
   ohai *args
   system *args