Wrap arguments for `[ -z` in double quotes

1 files changed, 1 insertions, 1 deletions

diff --git a/bin/web b/bin/web
index f6bacd6d784..67f236eb0bb 100755
--- a/bin/web
+++ b/bin/web
@@ -9,7 +9,7 @@ unicorn_config="$app_root/config/unicorn.rb"
 get_unicorn_pid()
 {
   local pid=$(cat $unicorn_pidfile)
-  if [ -z $pid ] ; then
+  if [ -z "$pid" ] ; then
     echo "Could not find a PID in $unicorn_pidfile"
     exit 1
   fi