diff --git a/tools/install.sh b/tools/install.sh
index 40690a497..f4ec478a1 100755
--- a/tools/install.sh
+++ b/tools/install.sh
@@ -1,3 +1,11 @@
+which zsh>/dev/null
+RES=$?
+if [ $RES -ne 0 ]
+then
+  echo "\033[0;33mYou do not have zsh installed.\033[0m You'll need to install zsh first if you want to install oh-my-zsh"
+  exit
+fi
+
 if [ -d ~/.oh-my-zsh ]
 then
   echo "\033[0;33mYou already have Oh My Zsh installed.\033[0m You'll need to remove ~/.oh-my-zsh if you want to install"