diff --git a/book/installation.rst b/book/installation.rst
index bde9abf2ccc..698177d1c0e 100644
--- a/book/installation.rst
+++ b/book/installation.rst
@@ -236,9 +236,9 @@ If there are any issues, correct them now before moving on.
         $ rm -rf app/cache/*
         $ rm -rf app/logs/*
 
-		$ APACHEUSER=`ps aux | grep -E '[a]pache|[h]ttpd' | grep -v root | head -1 | cut -d\  -f1`
-		$ sudo chmod +a "$APACHEUSER allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs
-		$ sudo chmod +a "`whoami` allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs
+        $ APACHEUSER=`ps aux | grep -E '[a]pache|[h]ttpd' | grep -v root | head -1 | cut -d\  -f1`
+        $ sudo chmod +a "$APACHEUSER allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs
+        $ sudo chmod +a "`whoami` allow delete,write,append,file_inherit,directory_inherit" app/cache app/logs
 
 
     **2. Using Acl on a system that does not support chmod +a**