diff --git a/scripts/cat-s3.sh b/scripts/cat-s3.sh
index e20d110b2..954124c29 100644
--- a/scripts/cat-s3.sh
+++ b/scripts/cat-s3.sh
@@ -35,3 +35,4 @@ while (( n_failures < 2 )); do
 done
 
 echo "Too many failures: $n_failures."
+exit 1