diff --git a/make-system b/make-system
index 9a66910f..4c7ef995 100755
--- a/make-system
+++ b/make-system
@@ -1,5 +1,7 @@
 #! /bin/sh
 
+set -e
+
 ROOT_SBIN=root-system/usr/local/sbin/
 
 if [ -d root-system ]
diff --git a/make-tests b/make-tests
index b5959642..9dc3b0c5 100755
--- a/make-tests
+++ b/make-tests
@@ -1,5 +1,7 @@
 #! /bin/sh
 
+set -e
+
 if [ -d root-tests ]
 then
 	echo "Deleting old test environment..."