diff --git a/tools/upgrade.sh b/tools/upgrade.sh
index cd689ba1f..0aeebdebf 100644
--- a/tools/upgrade.sh
+++ b/tools/upgrade.sh
@@ -1,7 +1,7 @@
 current_path=`pwd`
 current_path=${current_path/ /\\ }
 printf '\033[0;34m%s\033[0m\n' "Upgrading Oh My Zsh"
-cd $ZSH
+cd "$ZSH"
 
 if git pull origin master
 then