diff --git a/tests/functional/lib/bash/test_header b/tests/functional/lib/bash/test_header
index 623a7103a89..45bc376cb0d 100644
--- a/tests/functional/lib/bash/test_header
+++ b/tests/functional/lib/bash/test_header
@@ -805,14 +805,13 @@ mock_smtpd_init() {  # Logic borrowed from Rose
     # Try several ports in case any are in use:
     for SMTPD_PORT in 8025 8125 8225 8325 8425 8525 8625 8725 8825 8925; do
         local SMTPD_LOG="${TEST_DIR}/smtpd.log"
-        echo $SMTPD_LOG >&2
         local SMTPD_HOST="localhost:${SMTPD_PORT}"
         # Set up fake SMTP server to catch outgoing mail & redirect to log:
         python3 -u -m 'aiosmtpd' -c aiosmtpd.handlers.Debugging stderr -d -n -l \
             "${SMTPD_HOST}" \
             1>"${SMTPD_LOG}" 2>&1 &  # Runs in background
         local SMTPD_PID="$!"
-        while ! grep -q 'DebuggingServer started' "${SMTPD_LOG}" 2>'/dev/null'
+        while ! grep -q 'is listening' "${SMTPD_LOG}" 2>'/dev/null'
         do
             if ps "${SMTPD_PID}" 1>/dev/null 2>&1; then
                 sleep 1  # Still waiting for fake server to start
@@ -822,6 +821,7 @@ mock_smtpd_init() {  # Logic borrowed from Rose
                 break
             fi
         done
+        echo "ici" >&2
         if [[ -n "${SMTPD_PID:-}" ]]; then
             # Variables used by tests
             # shellcheck disable=SC2034