diff --git a/Formula/nu.rb b/Formula/nu.rb
index e8c333bf1d..7a5a90ed55 100644
--- a/Formula/nu.rb
+++ b/Formula/nu.rb
@@ -26,10 +26,10 @@ class Nu < Formula
     inreplace "Nukefile" do |s|
       s.gsub!('(SH "sudo ', '(SH "') # don't use sudo to install
       s.gsub!("\#{@destdir}/Library/Frameworks", "\#{@prefix}/Frameworks")
-      s.sub! /^;; source files$/, <<-EOS
-;; source files
-(set @framework_install_path "#{frameworks}")
-EOS
+      s.sub! /^;; source files$/, <<-EOS.undent
+        ;; source files
+        (set @framework_install_path "#{frameworks}")
+      EOS
     end
     system "make"
     system "./mininush", "tools/nuke"