diff --git a/sysmocom/ttcn3/jenkins-run.sh b/sysmocom/ttcn3/jenkins-run.sh
index 2bc687d2..1688b889 100755
--- a/sysmocom/ttcn3/jenkins-run.sh
+++ b/sysmocom/ttcn3/jenkins-run.sh
@@ -44,7 +44,7 @@ rm *.md5
 # jenkins build job.
 # On failure, first clean up below and then return the exit code.
 exit_code="1"
-if python3 -u "$(which osmo-gsm-tester.py)" "$trial_dir" $OSMO_GSM_TESTER_OPTS ; then
+if python3 -u "$(which osmo-gsm-tester.py)" -c "$OSMO_GSM_TESTER_CONF" "$trial_dir" $OSMO_GSM_TESTER_OPTS ; then
   exit_code="0"
 fi