diff --git a/Library/Homebrew/os/mac/xcode.rb b/Library/Homebrew/os/mac/xcode.rb
index 51f4274531..338fa1f438 100644
--- a/Library/Homebrew/os/mac/xcode.rb
+++ b/Library/Homebrew/os/mac/xcode.rb
@@ -8,13 +8,13 @@ module OS
 
       def latest_version
         case MacOS.version
-        when "10.4"         then "2.5"
-        when "10.5"         then "3.1.4"
-        when "10.6"         then "3.2.6"
-        when "10.7"         then "4.6.3"
-        when "10.8"         then "5.1.1"
-        when "10.9"         then "5.1.1"
-        when "10.10"        then "6.0"
+        when "10.4"  then "2.5"
+        when "10.5"  then "3.1.4"
+        when "10.6"  then "3.2.6"
+        when "10.7"  then "4.6.3"
+        when "10.8"  then "5.1.1"
+        when "10.9"  then "5.1.1"
+        when "10.10" then "6.0"
         else
           # Default to newest known version of Xcode for unreleased OSX versions.
           if MacOS.version > "10.10"