diff --git a/Library/Homebrew/extend/pathname.rb b/Library/Homebrew/extend/pathname.rb
index 78c27bf3fd..4ba5b78031 100644
--- a/Library/Homebrew/extend/pathname.rb
+++ b/Library/Homebrew/extend/pathname.rb
@@ -401,8 +401,8 @@ class Pathname
   def abv
     out=''
     n=`find #{to_s} -type f ! -name .DS_Store | wc -l`.to_i
-    out<<"#{n} files, " if n > 1
-    out<<`/usr/bin/du -hs #{to_s} | cut -d"\t" -f1`.strip
+    out << "#{n} files, " if n > 1
+    out << `/usr/bin/du -hs #{to_s} | cut -d"\t" -f1`.strip
   end
 
   # We redefine these private methods in order to add the /o modifier to