diff --git a/install-mac.sh b/install-mac.sh
index e8de917..ad7f3cf 100755
--- a/install-mac.sh
+++ b/install-mac.sh
@@ -1,5 +1,8 @@
 #!/bin/sh
 
+# Exit on error
+set -e
+
 # Path to your dotfiles.
 export DOTFILES=$HOME/.dotfiles