diff --git a/CI/ci-mac.sh b/CI/ci-mac.sh
index fc9b5ea8..caefdeb6 100755
--- a/CI/ci-mac.sh
+++ b/CI/ci-mac.sh
@@ -1,5 +1,8 @@
 #!/bin/bash
 
+#Exit on any error
+set -e
+
 LANGUAGE=$1
 
 PATH=$PATH:/opt/local/bin