diff --git a/scripts/functions/cleanup b/scripts/functions/cleanup
index 71050077c6..f349410435 100644
--- a/scripts/functions/cleanup
+++ b/scripts/functions/cleanup
@@ -8,13 +8,14 @@ __rvm_rm_rf()
   local result=1 target="${1%%+(/|.)}"
 
   #NOTE: RVM Requires extended globbing shell feature turned on.
+  shopt -s extglob
   case "${target}" in
 
     (*(/|.)@(|/Applications|/Developer|/Guides|/Information|/Library|/Network|/System|/User|/Users|/Volumes|/backups|/bdsm|/bin|/boot|/cores|/data|/dev|/etc|/home|/lib|/lib64|/mach_kernel|/media|/misc|/mnt|/net|/opt|/private|/proc|/root|/sbin|/selinux|/srv|/sys|/tmp|/usr|/var))
         false
       ;;
 
-    *)
+    (*)
       if [[ -n "${target}"  ]] ; then
 
         if [[ -d "${target}" ]] ; then # Directory