diff --git a/tests/certbot-boulder-integration.sh b/tests/certbot-boulder-integration.sh
index a9df76bc2..3bee996ba 100755
--- a/tests/certbot-boulder-integration.sh
+++ b/tests/certbot-boulder-integration.sh
@@ -8,7 +8,7 @@
 #
 # Note: this script is called by Boulder integration test suite!
 
-set -ex
+set -eux
 
 # Check that python executable is available in the PATH. Fail immediately if not.
 command -v python > /dev/null || (echo "Error, python executable is not in the PATH" && exit 1)
@@ -21,9 +21,6 @@ command -v python > /dev/null || (echo "Error, python executable is not in the P
 #    running it only when the CI environment variable is already set.]
 [ -z "$SYNTHETIC_PTY" ] && SYNTHETIC_PTY=true exec python -c 'import pty, sys; pty.spawn(sys.argv[1:])' "$0" "$@"
 
-# The SYNTHETIC_PTY item above doesn't work if set -u has already been run.
-set -u
-
 . ./tests/integration/_common.sh
 export PATH="$PATH:/usr/sbin"  # /usr/sbin/nginx