diff --git a/release/build_nomulus_for_env.sh b/release/build_nomulus_for_env.sh
index 5e316e739..87e778dc6 100755
--- a/release/build_nomulus_for_env.sh
+++ b/release/build_nomulus_for_env.sh
@@ -17,6 +17,8 @@
 # artifacts for all services to a designated location, and then creates a
 # tarball from there.
 
+set -e
+
 if [ $# -ne 2 ];
 then
   echo "Usage: $0 alpha|crash|sandbox|production|tool <destination>"