diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index 328334b836..789e3b5aa3 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -374,6 +374,8 @@ class FormulaInstaller
       f.rack.rmdir_if_possible
     end
     raise
+  ensure
+    read.close
   end
 
   def link