diff --git a/Library/Homebrew/brew.h.rb b/Library/Homebrew/brew.h.rb
index 76f56365c6..daa58bbfe9 100644
--- a/Library/Homebrew/brew.h.rb
+++ b/Library/Homebrew/brew.h.rb
@@ -21,7 +21,7 @@ def check_for_blacklisted_formula names
 
     when 'setuptools' then abort <<-EOS.undent
       When working with a Homebrew-built Python, distribute is preferred
-      over setuptools, and can be used as the prequisite for pip.
+      over setuptools, and can be used as the prerequisite for pip.
 
       Install distribute using:
         brew install distribute