diff --git a/tools/install.sh b/tools/install.sh
index a53ac48ab..35548005a 100755
--- a/tools/install.sh
+++ b/tools/install.sh
@@ -23,8 +23,8 @@ fi
 
 echo "\033[0;34mUsing the Oh My Zsh template file and adding it to ~/.zshrc\033[0m"
 cp $ZSH/templates/zshrc.zsh-template ~/.zshrc
-sed -i -e "/^ZSH=/ c\\
-ZSH=$ZSH
+sed -i -e "/^export ZSH=/ c\\
+export ZSH=$ZSH
 " ~/.zshrc
 
 echo "\033[0;34mCopying your current PATH and adding it to the end of ~/.zshrc for you.\033[0m"