diff --git a/lam-packaging/buildPackages b/lam-packaging/buildPackages
index b07eb21e..ab4a7f4b 100755
--- a/lam-packaging/buildPackages
+++ b/lam-packaging/buildPackages
@@ -8,6 +8,8 @@ echo -e "Usage: buildPackage <CVS tag>"
 exit
 fi
 
+set -e
+
 cd /daten/projekte/lam/pakete
 
 export CVS_TAG=$1